What is the recommended CO2 and Nitrogen pressure ratio for serving draught beer?

The recommended CO2 and nitrogen pressure ratio for serving draught beer typically maximizes flavor, aroma, and carbonation while minimizing excessive foaming or flat beer issues. A blend of 75% CO2 and 25% nitrogen is advantageous in serving certain styles of beer, particularly those that tend to be creamier or have a smoother mouthfeel, such as stouts or porters.

Using primarily carbon dioxide helps maintain the proper carbonation level needed for most beers, whereas nitrogen contributes to a smoother texture and can also help create a stable head. The balance of 75% CO2 to 25% nitrogen achieves a desirable combination that enhances the overall drinking experience by achieving appropriate carbonation without overpowering the flavors or creating unwanted foaming.

In contrast, options that suggest a higher proportion of nitrogen may lead to a less carbonate-driven beer, which might not work as well with all beer styles. A pure CO2 option may result in excessive carbonation, which can detract from the beer's characteristics and enjoyment. Therefore, the 75% CO2 and 25% nitrogen blend is widely recommended for optimum draught service, making it the correct choice in this context.