Exploring the Rise of Nitrogen and Mixed Gas Beers in Brewing

Scott Tuck
Jul 15
4 min read

Craft brewing continues to evolve, with brewers constantly experimenting to create unique flavors and textures. One of the most interesting trends gaining momentum is the use of nitrogen and mixed gases in beer production and serving. These gases influence the beer’s mouthfeel, appearance, and overall drinking experience in ways that differ significantly from traditional carbon dioxide carbonation. This post explores what nitrogen and mixed gas beers are, why they are becoming popular, and how they are changing the craft beer landscape.

What Are Nitrogen and Mixed Gas Beers?

Most beers are carbonated with carbon dioxide (CO2), which creates the familiar fizzy bubbles and sharp mouthfeel. Nitrogen (N2), on the other hand, is an inert gas that dissolves poorly in liquid, producing smaller bubbles and a smoother, creamier texture. Mixed gas beers combine nitrogen and CO2 in varying ratios to balance carbonation and creaminess.

Nitrogen Beers

Nitrogen beers use almost pure nitrogen or a high percentage of nitrogen gas instead of CO2. Because nitrogen bubbles are smaller and less soluble, the beer pours with a thick, velvety head and a smooth mouthfeel. This style is often associated with stouts and porters, such as the iconic Guinness, which popularized nitrogen dispensing.

Mixed Gas Beers

Mixed gas beers typically use a blend of about 70-75% nitrogen and 25-30% CO2. This mixture allows brewers to maintain some carbonation while achieving the creamy texture nitrogen provides. The exact ratio can vary depending on the beer style and desired effect.

Why Brewers Are Turning to Nitrogen and Mixed Gases

Several factors explain why nitrogen and mixed gas beers are gaining traction in craft brewing:

Unique Mouthfeel: Nitrogen creates a smooth, creamy sensation that contrasts with the sharpness of CO2. This can make beers feel richer and more luxurious.
Visual Appeal: The cascading effect of nitrogen bubbles rising in the glass creates an eye-catching presentation that enhances the drinking experience.
Flavor Perception: Nitrogen can soften bitterness and acidity, making certain beer styles more approachable.
Innovation and Differentiation: Craft brewers seek ways to stand out. Using nitrogen or mixed gases offers a distinctive product that appeals to adventurous drinkers.

How Nitrogen and Mixed Gas Beers Are Made and Served

Brewing Considerations

The brewing process for nitrogen beers is similar to traditional beers, but brewers must consider how the beer will interact with nitrogen during serving. Nitrogen does not carbonate beer in the same way CO2 does, so beers intended for nitrogen dispensing are often brewed with lower carbonation levels.

Dispensing Systems

Nitrogen and mixed gas beers require special draft systems. These systems use gas tanks filled with nitrogen or nitrogen/CO2 blends and a restrictor plate in the tap faucet to create the characteristic creamy head and cascading bubbles.

Nitrogen tanks supply nearly pure nitrogen.
Mixed gas tanks supply a blend, often called "beer gas."
Restrictor plates control the flow and bubble size.

These systems are more complex than standard CO2 draft setups but are essential for delivering the proper texture and appearance.

Popular Styles and Examples of Nitrogen and Mixed Gas Beers

While nitrogen beers are often associated with stouts, brewers are experimenting across many styles:

Stouts and Porters: The classic nitrogen style, with Guinness as the most famous example. Other breweries produce nitrogen versions of their dark beers to highlight smoothness.
IPAs: Some brewers use nitrogen to soften the bitterness and create a creamier IPA experience.
Pale Ales and Lagers: Nitrogen can add a unique twist, though it is less common.
Mixed Gas Cream Ales: These beers combine light carbonation with a smooth mouthfeel.

Notable Examples

Guinness Draught: The benchmark nitrogen beer with a thick, creamy head and smooth texture.
Murphys : A popular nitrogen stout with a velvety mouthfeel slightly less bitter.
Kilkeny : A nitro Irish cream ale.
Samuel Adams Nitro IPA: An example of an IPA using nitrogen to balance hop bitterness.
Bells Two Hearted Ale Nitro: A nitrogen version of a classic American IPA.

Serving Tips and Consumer Experience

Nitrogen and mixed gas beers require different serving techniques to maximize their qualities:

Pouring: Nitrogen beers are often poured at a 45-degree angle and allowed to settle before topping off to create the creamy head.
Glassware: Use clean, clear glasses to showcase the cascading bubbles and creamy foam.
Temperature: Serve slightly colder than traditional beers to maintain texture and flavor balance.

Consumers often describe nitrogen beers as smoother, less fizzy, and more satisfying in texture. The visual appeal of the cascading bubbles also adds to the overall enjoyment.

Challenges and Considerations for Brewers

While nitrogen and mixed gas beers offer exciting possibilities, brewers face some challenges:

Equipment Costs: Nitrogen draft systems are more expensive and require maintenance.
Gas Supply: Nitrogen tanks and mixed gas blends are less common than CO2, requiring reliable suppliers.
Recipe Adjustments: Brewers must tweak carbonation levels and ingredients to suit nitrogen dispensing.
Consumer Education: Some drinkers may be unfamiliar with nitrogen beers and need guidance on what to expect.

Despite these challenges, many craft brewers find the benefits outweigh the costs, especially as consumer interest grows.

The Future of Nitrogen and Mixed Gas Beers in Craft Brewing

The rise of nitrogen and mixed gas beers reflects the craft brewing industry's desire to innovate and offer new sensory experiences. As more breweries experiment with these gases, expect to see a wider range of styles and creative applications.

Emerging trends include:

Hybrid Styles: Combining nitrogen with other techniques like barrel aging or fruit additions.
Nitro Cans and Bottles: Packaging nitrogen beers for retail with special widgets to replicate draft effects.
Educational Events: Tastings and festivals focused on nitrogen beers to build consumer awareness.

Craft beer drinkers looking for smooth textures and unique presentations will likely see nitrogen and mixed gas beers become a regular part of their options.

Nitrogen and mixed gas beers bring a fresh dimension to craft brewing by changing how beer feels, looks, and tastes. Brewers who embrace these gases create memorable drinking experiences that stand out in a crowded market. Whether you prefer a creamy stout or a smooth IPA, exploring nitrogen beers offers a new way to enjoy craft beer. Next time you visit a brewery or bar, try a nitrogen-infused beer and discover how this simple change in gas can transform your pint.