Picture this: a glass of coffee that looks more like a freshly poured Guinness than your morning cup. Tiny bubbles cascade downward in a mesmerizing swirl before settling into a creamy, dense foam head. You take a sip. The texture is silky and almost velvety. There is no ice watering it down, no cream making it heavy, no sugar masking the coffee's natural character. It is rich, smooth, and subtly sweet on its own. That is nitro cold brew, and once you experience it, you will want to know exactly how to make it yourself.
Nitro cold brew has become one of the most exciting developments in modern coffee culture. What started as a craft-bar curiosity has grown into a mainstream staple, available in cans at grocery stores, on tap at specialty cafes, and increasingly in home kitchens. Most people encounter it for the first time at a coffee shop and immediately ask the same question: how do I make this at home?
That is exactly what we are going to walk you through in this article. We will cover what nitro cold brew actually is, the science behind why nitrogen makes coffee taste creamier and smoother, how it compares to regular cold brew coffee and iced coffee, what equipment you genuinely need, and a full step-by-step process for making it at home. We will also talk about troubleshooting, storage, and what to do if something goes wrong.
At Buddha's Cup, we grow Kona coffee at elevation on the volcanic slopes of Hualalai in Holualoa, Hawaii. Cold brew is one of our favorite ways to showcase the naturally smooth, low-acid character that Kona coffee is known for. When you take that already-mellow profile and add a nitrogen infusion, the result is something genuinely special. We will show you how to get there.
What Is Nitro Cold Brew Coffee?
Before you can make nitro cold brew at home, you need to understand what it actually is. The name sounds technical, and there is real science involved, but the concept is straightforward once you break it down into its core parts.
The Core Definition
Nitro cold brew is cold brew coffee that has been infused with nitrogen gas under pressure and dispensed through a pressurized tap system fitted with a restrictor plate. If that sounds familiar, it should. The serving system is essentially the same technology used to pour Guinness stout. The restrictor plate is a small disc with tiny holes that forces the pressurized coffee through at high velocity, agitating the nitrogen and triggering the characteristic cascade of micro-bubbles.
The nitrogen used is N₂, standard diatomic nitrogen, the same gas that makes up roughly 78 percent of the air we breathe. This is a critical point because nitrogen gas behaves very differently from carbon dioxide, which is what makes soda and sparkling water fizzy. Nitrogen molecules are much smaller and far less soluble in liquid. When released from a pressurized system, nitrogen does not dissolve into the coffee. Instead, it forms thousands of microscopic bubbles that give the drink its signature texture.
The result is a beverage that is creamy without dairy, sweet-tasting without sugar, and smooth without any sharp carbonation bite. Many people who try nitro cold brew for the first time are surprised to discover that nothing has been added to achieve those qualities. It is pure coffee, pure nitrogen, and the physics of pressure doing all the work.
It is worth understanding how this differs from other cold coffee drinks. If you are curious about how it differs from iced coffee and cold brew, we have a full breakdown on that topic as well. For now, the short version is that nitro cold brew starts as regular cold brew and then gets charged with nitrogen before serving. The nitrogen infusion is what separates it from every other cold coffee format.
A Brief History: How Nitro Cold Brew Entered the Coffee World
Nitro cold brew did not appear overnight. Its origins trace back to the early 2010s, when the craft coffee movement was pushing boundaries in cities like Austin, Texas and Portland, Oregon. Small, independent coffee bars began experimenting with draft beer tap systems, wondering what would happen if they ran cold brew through a stout faucet instead of ale. What they got was something they had not quite expected: a coffee that looked and poured like a dark beer but tasted unmistakably like coffee, just smoother and richer than any cold coffee they had served before.
The idea was directly inspired by nitrogen-infused draft beer, particularly Guinness, which has used nitrogen to achieve its famous creamy pour since the 1960s. Coffee professionals noticed that the same physics that gave Guinness its cascading effect and dense head could do something equally impressive for cold brew. The specialty coffee community embraced the concept quickly, and by the mid-2010s, nitro cold brew had become a fixture on menus at progressive coffee shops across the country.
The mainstream tipping point came in 2017, when Starbucks began a national rollout of Nitro Cold Brew across its stores. That single move brought nitro cold brew to millions of people who had never encountered it before and effectively established it as a permanent part of modern coffee culture rather than a passing trend.
Since then, the format has evolved steadily. Canned nitro cold brew appeared in grocery store refrigerator sections, using widget technology similar to Guinness cans to deliver the cascade effect in a sealed container. Home nitro keg systems became available for purchase. The drink moved from novelty to staple in the span of roughly a decade, which is a remarkable trajectory by any measure. Today, nitro cold brew is not a trend that is peaking. It is an established format with its own loyal audience and a growing home-brewing community.
Nitro Cold Brew vs. Regular Cold Brew vs. Iced Coffee
These three beverages are related but meaningfully different. Understanding the distinctions helps you appreciate what nitro cold brew actually brings to the table, and it also helps you decide which format suits your taste preferences and lifestyle best.
Regular cold brew starts with coarsely ground coffee steeped in cold or room-temperature water for 12 to 24 hours. The result is a smooth, low-acid concentrate that is typically diluted before drinking and served over ice. Cold brew has a full body and rich flavor, but its texture is liquid, not creamy. It is excellent coffee, but it is not the same experience as nitro. If you want to learn how to make cold brew coffee from scratch, we have a dedicated guide for that process.
Iced coffee is a different animal entirely. It is made by brewing hot coffee through a standard method, often drip or pour-over, and then cooling it, usually by pouring it directly over ice. The hot brewing process extracts acids more aggressively than cold brewing, so iced coffee tends to have more bite and bitterness. It also becomes diluted as the ice melts, which changes both strength and flavor over time. If you enjoy iced coffee and want to refine your technique, our guide on how to make iced coffee covers all the key variables.
Nitro cold brew takes the cold brew base, with its naturally lower acidity and smooth flavor, and adds the nitrogen infusion. It is served without ice, so there is no dilution. It comes out of a tap cold and already at full strength. The nitrogen gives it a texture that neither regular cold brew nor iced coffee can replicate: a dense, velvety body with a creamy foam head that lingers in the glass and on the palate.
In terms of acidity, nitro cold brew is the gentlest of the three. In terms of texture, it is by far the most distinctive. In terms of caffeine, it is typically the strongest because it is served without ice dilution and uses a concentrated cold brew base. Each format has its place, but nitro cold brew occupies a unique position that no other cold coffee format can fill.
The Science of Nitrogen in Coffee
The sensory experience of nitro cold brew, the cascade, the foam, the creamy texture, the perceived sweetness, is not magic. It is physics and chemistry working together in a way that happens to produce something genuinely delightful. Understanding the science will not only satisfy your curiosity but also help you make better decisions when setting up your home system.
Why Nitrogen and Not Carbon Dioxide?
This is the question at the heart of everything. CO₂ is the obvious choice for pressurizing beverages. It is cheap, widely available, and already used in soda, sparkling water, and carbonated beer. So why does nitro cold brew use nitrogen instead?
The answer comes down to solubility. Carbon dioxide dissolves readily in water, forming carbonic acid in the process. That is what gives carbonated drinks their sharp, tangy bite. When you taste sparkling water or soda, that prickling sensation on your tongue is partly from the CO₂ bubbles bursting and partly from the mild acid formed as the gas dissolves. For some beverages, that sharpness is desirable. For coffee, particularly a smooth, low-acid cold brew, it would be a disaster.
Nitrogen is a diatomic molecule, meaning it exists as N₂ in its natural state, and it is nearly insoluble in water at atmospheric pressure. It does not dissolve into the coffee. It does not form acids. When you release pressurized nitrogen through the restrictor plate on a stout faucet, it does not get absorbed by the liquid. Instead, it forms thousands of micro-bubbles, far smaller than CO₂ bubbles, that remain suspended in the coffee and rise slowly to the surface. Those micro-bubbles are what create the cascade effect, the dense foam head, and the creamy texture.
The restrictor plate is essential to this process. It is a small disc with multiple tiny holes, usually around five, drilled through it. When pressurized coffee flows through those holes at speed, the sudden pressure drop agitates the dissolved nitrogen and forces it out of solution as a rush of micro-bubbles. Without the restrictor plate, you get a pour of coffee with some nitrogen in it. With the restrictor plate, you get the cascade. This is why a standard faucet will not give you the same result, even if you have nitrogen gas and a keg. The hardware details matter.
The Cascade Effect and Foam Head Explained
The cascade is the visual signature of nitro cold brew, and it is genuinely one of the more beautiful things in the beverage world. When you pour a nitro cold brew, whether from a tap or a pressurized canister, you will see a dense column of bubbles that appears to flow downward before reversing and rising. The liquid seems to churn from the inside. Within seconds, the motion settles and a thick, creamy head forms at the top of the glass.
This is identical to what happens when you pour a Guinness, and the physics are the same. When the pressurized coffee passes through the restrictor plate, it experiences a sudden drop in pressure. The nitrogen gas that was held in solution by that pressure is released all at once as millions of tiny bubbles. Those bubbles start rising immediately, but because they are so small and the coffee is cold and dense, they rise slowly. As they travel upward, they push the denser liquid downward along the sides of the glass in a circular current. That downward motion is what creates the visual cascade. It looks like the bubbles are falling, but they are actually rising. The denser liquid is falling around them.
As the bubbles reach the surface, they accumulate into the foam head. Because nitrogen bubbles are so small, the foam they form is much denser and more stable than the foam you get from CO₂ or from mechanical agitation. This foam head does more than look good. It acts as a physical barrier that slows oxidation and preserves the aromatic compounds in the coffee. The aromatics that contribute so much to what you taste are protected by that layer of dense foam, which is part of why nitro cold brew can taste more complex and nuanced than the same cold brew served without nitrogen.
How Nitrogen Affects Taste and Perceived Sweetness
Here is the part that surprises most people: nitro cold brew tastes sweeter than regular cold brew even though nothing sweet has been added. This is not a placebo effect. There is real science behind it.
Nitrogen micro-bubbles interact with taste receptors on the tongue in a way that plain liquid does not. The bubbles provide a physical stimulus that the brain partially interprets as sweetness or richness. This is a tactile effect as much as a chemical one. The same mechanism is part of why full-fat dairy products taste richer than skim, and why carbonated beverages with certain flavors seem more intense than their still counterparts. The texture of a beverage influences how we perceive its flavor, and nitrogen gives nitro cold brew a texture that leans naturally toward sweetness and richness.
At the same time, cold brew itself is naturally lower in acidity than hot brewed coffee. The pH of cold brew typically runs between 5.5 and 6.0, compared to hot brewed coffee which tends to land around 4.5 to 5.0. That lower acidity means less bitterness and less sharpness on the palate, and nitrogen enhances this further by masking whatever residual acidity remains. The practical result is that most people who normally sweeten or cream their coffee find they can drink nitro cold brew completely black and genuinely enjoy it.
This is one of the reasons we love nitro cold brew as a showcase for Kona coffee. The Kona coffee bean flavor profile is already characterized by natural sweetness, smooth body, and mild acidity. When you brew it cold and then add nitrogen, those qualities come into sharp, clean focus. The result is a cup that expresses everything Kona coffee does well, and the nitrogen brings it to the surface without any added ingredients clouding the picture.
If you are interested in learning more about why coffee, and particularly cold brew formats, can offer certain wellness benefits, our overview of the health benefits of coffee goes into more detail on the broader subject.
Caffeine, Acidity, and Health Considerations
People often have practical questions about nitro cold brew beyond the flavor experience. How much caffeine does it actually contain? Is it gentler on the stomach? What are the calories? These are worth addressing directly and honestly.
Caffeine Content in Nitro Cold Brew
Nitro cold brew is typically one of the higher-caffeine coffee beverages you can drink. There are two reasons for this. First, cold brew is usually brewed as a concentrate, using a higher ratio of coffee grounds to water than you would use for drip coffee. Second, nitro cold brew is served without ice, so there is no dilution happening in the glass. What comes out of the tap or canister is full-strength concentrate going directly to you.
As a general benchmark, a 12-ounce serving of nitro cold brew can contain anywhere from 200 to 280 milligrams of caffeine, depending on how strong the cold brew concentrate was made and what coffee was used. For comparison, a standard 12-ounce drip coffee typically contains around 95 to 165 milligrams of caffeine. Iced coffee tends to fall in a similar range to drip coffee. Nitro cold brew is meaningfully stronger than both on a per-ounce basis.
This is important to know if you are sensitive to caffeine, if you are drinking coffee later in the day, or if you are planning to have multiple servings. A single 12-ounce nitro cold brew may contain as much caffeine as two cups of regular drip coffee. That is not a problem for many coffee drinkers, but it is worth being aware of so you can pace yourself accordingly. When you make nitro cold brew at home, you have full control over the concentration of your cold brew base, which means you can dial back the caffeine by brewing at a lower ratio if you prefer.
Acidity and Digestive Comfort
One of the most commonly cited reasons people choose cold brew over hot brewed coffee is that it is gentler on the stomach. The cold brewing process does not extract acids as aggressively as hot water does, which results in a final beverage with a higher pH and a milder effect on sensitive digestive systems. Cold brew typically sits at a pH of 5.5 to 6.0, while hot brewed coffee is usually around 4.5 to 5.0.
Nitro cold brew inherits these properties from its cold brew base. Many people who find regular hot coffee uncomfortable report having no issue with cold brew or nitro cold brew. This is a commonly reported experience rather than a medical claim, and individual responses vary, but the lower acidity of the brew method is a real and measurable characteristic, not just marketing language.
What matters as much as the brew method is the coffee you start with. Some coffees are naturally higher in certain acids than others, and those differences persist even through cold brewing. Coffees grown at moderate elevations in volcanic soil, like Kona coffee from the Big Island of Hawaii, tend to have a naturally lower acid profile that makes them excellent candidates for cold brew and nitro cold brew applications. If reducing acidity is a priority for you, paying attention to the origin and variety of coffee you use will make a real difference. Our post on the health benefits of coffee covers the relationship between acidity, roast level, and how different brewing methods affect the final cup.
Is Nitro Cold Brew Dairy-Free and Low-Calorie?
Yes, authentic nitro cold brew contains only two things: coffee and nitrogen. No milk, no cream, no sweetener, nothing else. A straight 12-ounce nitro cold brew typically comes in at somewhere between 5 and 10 calories, almost all of which come from trace carbohydrates in the coffee itself. For calorie-conscious coffee drinkers, it is one of the most satisfying and indulgent-feeling low-calorie options available, precisely because the nitrogen creates that creamy, rich mouthfeel without any added fat or sugar.
If you have encountered nitro cold brew at Starbucks or other commercial chains, you may have noticed that many of their menu options include additions like vanilla sweet cream, syrups, or flavored foams. These additions can significantly increase the calorie count and alter the flavor profile. When you make nitro cold brew at home, you have complete control. You can keep it pure and simple, or you can add your own touches.
One variation we love at Buddha's Cup is a splash of coconut cream or macadamia nut milk added to a glass of nitro cold brew. It is a Hawaii-inspired take that adds a natural sweetness and a tropical richness that complements Kona coffee beautifully. If you are curious about how local ingredients can enhance your coffee experience, our guide on health insights from Kona coffee explores how pairing coffee with locally grown flavors can elevate both the taste and the experience.
Equipment You Need to Make Nitro Cold Brew at Home
This is where many guides become vague or overly optimistic. The truth is that making genuine nitro cold brew at home requires specific equipment, and that equipment does involve an upfront investment. We will break down your options clearly so you can choose what makes sense for your situation and budget.
The True Nitro Setup: Kegs, Nitrogen Tanks, and Tap Systems
If you want the full tap-pull experience at home, the kind where you press a lever and watch the cascade form in a glass, you need a proper nitro cold brew keg system. This is a multi-component setup, but each piece has a specific function and they all work together.
The core components of a home nitro cold brew system are a nitrogen gas cylinder, a pressure regulator, a mini keg or Cornelius keg, a stout faucet with a restrictor plate, and the food-grade tubing and connectors that link everything together.
The nitrogen gas cylinder must contain food-grade N₂. This is not negotiable. Welding-grade nitrogen can contain contaminants that have no place in a beverage. When you source your nitrogen supply, make sure the cylinder is explicitly labeled for food or beverage use. Many homebrew supply stores and welding supply shops that serve the food industry carry the appropriate product. You will need to refill or exchange the cylinder periodically, similar to how CO₂ tanks for home carbonation systems are maintained.
The pressure regulator attaches to the nitrogen cylinder and allows you to control the pressure being applied to the keg. For nitro cold brew, you typically want to charge at around 30 to 40 PSI. The regulator gives you that control and ensures you are not over-pressurizing the system.
The keg holds your cold brew concentrate. Mini kegs, usually around 2 liters, are a good option for single-household use. Cornelius kegs, which hold around 5 gallons, are better if you brew large batches or want to serve multiple people over several days. Both types are available from homebrew supply retailers.
The stout faucet with a restrictor plate is the most important and most easily overlooked component. The restrictor plate is what creates the cascade. Without it, nitrogen will flow through the tap but the characteristic cascade and dense foam head will not form. Make sure your tap is specifically rated as a stout or nitro faucet and that it includes the restrictor plate. Standard beer faucets will not achieve the same result.
A complete home nitro cold brew keg system typically costs somewhere between $80 and $300 or more, depending on the brand, keg size, and whether you purchase components individually or as a bundled kit. This setup is best suited to coffee enthusiasts who want to serve nitro cold brew regularly, host guests, or batch brew weekly. If that describes you, the investment pays for itself quickly in the quality and consistency of what you can produce at home.
The Accessible Alternative: Pressurized Canisters with Nitrogen Cartridges
If you are not ready to commit to a full keg setup, there is a more affordable and compact option: an iSi-style pressurized stainless steel canister used with nitrogen cartridges. These canisters look similar to whipped cream dispensers, and many people already own one for other kitchen uses. The key difference is in the cartridge you use.
Standard whipped cream dispensers use N₂O, nitrous oxide. That is not the same gas as N₂, nitrogen. If you use nitrous oxide cartridges in an attempt to make nitro cold brew, you will get a coffee with a slightly aerated texture, but it will not be the same thing. Nitrous oxide has different solubility properties and a different interaction with the coffee. The result lacks the characteristic silky quality of true nitro cold brew. For home nitro cold brew using this canister method, you must use cartridges specifically labeled as nitrogen or N₂. These are available from specialty coffee retailers and some homebrew supply stores.
The process with an iSi-style canister is straightforward. You fill the canister with your cold brew concentrate, charge it with one or two nitrogen cartridges, shake the canister vigorously to distribute the gas, and then dispense the coffee by pressing the lever with the canister inverted. The result is a glass of nitro cold brew with a cascade effect and a foam head, though the cascade is typically less dramatic than what a full keg tap system produces, and the foam head may be slightly less dense.
This method is excellent for home use, for single servings, and for people who want to experiment with nitro cold brew before committing to a larger setup. The canister itself typically costs between $40 and $80, and nitrogen cartridges are priced at roughly $1 to $3 each depending on the source. It is a genuinely accessible entry point.
What You Do Not Need
It is worth being clear about what you do not need, because there is a fair amount of misinformation in circulation about home nitro cold brew methods. You do not need a special nitro cold brew maker sold as an all-in-one appliance, most of which either use CO₂ instead of nitrogen or produce results that are significantly inferior to either the keg method or the canister method. You do not need a soda maker or a SodaStream, which uses CO₂ and will produce carbonated coffee, not nitro cold brew. You do not need any special cold brew maker beyond a simple container for steeping, since the cold brew concentrate is just coarsely ground coffee steeped in cold water.
The equipment you need is specific but not complicated. The key is sourcing the right gas, nitrogen specifically, and having the right dispensing hardware, particularly a restrictor plate. Everything else is fairly standard kitchen territory.
How to Make Nitro Cold Brew at Home: The Full Step-by-Step Process
Now we get to the practical heart of the matter. Making nitro cold brew at home is a two-stage process. First you make the cold brew concentrate. Then you infuse it with nitrogen and serve it. Neither stage is difficult, but both benefit from attention to detail.
Step One: Make a Strong Cold Brew Concentrate
Nitro cold brew is served without ice and without dilution, so your cold brew base needs to be brewed at a higher concentration than you would use for regular cold brew. A good starting ratio for nitro cold brew is 1 cup of coarsely ground coffee to 3 cups of cold filtered water. Some people prefer a 1:2 ratio for an even stronger concentrate; you can adjust this based on your taste preferences.
Grind your coffee coarsely, roughly the consistency of raw sugar or coarse sea salt. A coarser grind minimizes over-extraction during the long steep time and results in a cleaner, smoother cup. Fine grinds can produce bitterness and cloudiness in cold brew.
Combine the ground coffee and cold filtered water in a large jar, pitcher, or dedicated cold brew vessel. Stir gently to make sure all the grounds are saturated. Cover the container and place it in the refrigerator. Steep for 16 to 24 hours. We prefer the lower end of that range, around 16 to 18 hours, for a smooth and clean flavor without bitterness. Longer steeps are possible but increase the risk of extracting harsher compounds.
After steeping, filter the concentrate through a fine mesh strainer lined with cheesecloth or a dedicated cold brew filter. Take your time with this step. Rushing the filtration can result in sediment making it into your final concentrate, which affects both texture and clarity. A clean, sediment-free concentrate makes better nitro cold brew.
The finished concentrate can be stored in the refrigerator for up to two weeks. If you want detailed guidance on keeping cold brew fresh for as long as possible, our guide on cold brew storage tips covers all the best practices for maintaining quality over time.
Step Two: Choose Your Coffee Wisely
The coffee you use matters enormously in nitro cold brew because nitrogen amplifies what is already there. A mediocre coffee with harsh flavors will not suddenly become excellent when you add nitrogen. The smoothness and sweetness you want in nitro cold brew need to be present in the cold brew concentrate to begin with.
Medium to dark roasts generally perform well in cold brew because their lower acidity and fuller body translate cleanly into the concentrate. Lighter roasts can produce interesting fruity and floral cold brews but may have more acidity than you want in a nitro application. Single-origin coffees from regions known for clean, smooth, low-acid profiles are excellent choices.
At Buddha's Cup, we grow our Kona coffee at around 1,400 feet elevation on the slopes of Hualalai. The Big Island's unique combination of volcanic soil, afternoon cloud cover, and tropical climate creates growing conditions that are genuinely unlike anywhere else in the world. Holualoa, the village where our farm sits, sits in the heart of the Kona coffee belt, a narrow strip of land along the western slope of the island that has produced world-class coffee for over 150 years. The naturally lower acidity and characteristic notes of milk chocolate, macadamia, and gentle fruit that define Kona coffee make it one of the finest possible bases for cold brew and nitro cold brew. You can explore more about what makes Kona coffee distinct in our post on specific flavors in Kona coffee.
Step Three: Infuse with Nitrogen and Serve
If you are using a keg system, transfer your finished cold brew concentrate into the sanitized keg. Seal the keg, connect it to your nitrogen cylinder via the regulator, and charge the keg to approximately 30 to 40 PSI. Place the keg in the refrigerator for at least 12 hours, ideally 24 hours, to allow the nitrogen to integrate fully with the coffee. When you are ready to serve, pour a glass by pulling the stout tap lever firmly and allowing the cascade to form. Serve without ice.
If you are using an iSi-style canister, fill the canister with your cold brew concentrate up to the fill line. Do not overfill. Charge the canister with one or two nitrogen cartridges according to the manufacturer's instructions. With the lid sealed, shake the canister vigorously for about 30 seconds to help the nitrogen infuse throughout the liquid. Refrigerate the charged canister for at least 30 minutes. To serve, invert the canister over a glass and press the lever, tilting the glass at an angle as you would when pouring a stout beer. Allow the cascade to settle before drinking.
In both cases, serve the nitro cold brew in a clear glass so you can enjoy the cascade. A pint glass or a rocks glass works well. Do not add ice, as ice will disrupt the foam head and dilute the concentrate. If you want to add anything, a small pour of coconut cream or macadamia nut milk over the top creates a beautiful layered effect and complements the coffee without overwhelming it.
Troubleshooting Common Nitro Cold Brew Problems
Even when you have the right equipment and follow the steps carefully, you may encounter issues the first few times you make nitro cold brew at home. Here are the most common problems and how to solve them.
No Cascade or Very Little Foam
If your pour comes out looking like regular cold brew with minimal bubbles and no meaningful foam head, the most likely cause is the restrictor plate. If you are using a keg system, check that your stout faucet actually includes the restrictor plate and that it is properly installed. Many people purchase tap systems that do not include this component, or they remove it accidentally during cleaning. Without the restrictor plate, the nitrogen does not get agitated properly on its way out of the tap.
Another possible cause is insufficient pressure in the keg. Check your regulator and make sure you are applying at least 30 PSI. If the pressure is too low, the nitrogen has not fully integrated with the coffee and the cascade effect will be weak.
If you are using the canister method, make sure you are shaking vigorously enough and that you have refrigerated the charged canister for the full 30 minutes before dispensing. Under-chilled concentrate does not hold nitrogen as well, which reduces the cascade effect and foam production.
Bitter or Off-Tasting Nitro Cold Brew
Bitterness in nitro cold brew almost always comes from the cold brew concentrate rather than the nitrogen infusion. The most common causes are grinding too fine, ste