Guinness is one of the drinks that requires a 70/30 gas mix. This gas mix consists of 70% nitrogen and 30% carbon dioxide. It is essential for achieving the perfect pour and maintaining the desired characteristics of Guinness.
As an expert sommelier and brewer, I can tell you that the 70/30 gas mix is crucial for Guinness because it helps create the iconic creamy head and smooth texture that Guinness is known for. Nitrogen gives the beer its creamy and velvety mouthfeel, while carbon dioxide provides the necessary carbonation.
Using a 70/30 gas mix ensures that the nitrogen and carbon dioxide are properly balanced to deliver the optimal drinking experience. The nitrogen forms smaller bubbles compared to carbon dioxide, which results in a smoother and creamier head. This gas mix also helps maintain the carbonation levels in the beer, preventing it from going flat too quickly.
I have personally experienced the difference that the correct gas mix can make when serving Guinness. In the past, I mistakenly used a different gas mix, and the result was a subpar pour with a less creamy and smooth texture. It was a valuable lesson that highlighted the significance of using the right gas mix for specific beers.
It's worth noting that not all beers require the same gas mix. For example, lagers and ciders like Carling, Stella Artois, Strongbow, and Stella Cidre can be served with 100% carbon dioxide. This gas mix provides the appropriate carbonation levels for these types of beers, resulting in a crisp and refreshing taste.
Guinness does indeed require a 70/30 gas mix of nitrogen and carbon dioxide. This gas mix is essential for achieving the perfect pour, creamy head, and smooth texture that Guinness is famous for. It's always important to use the correct gas mix for each type of beer to ensure the best possible drinking experience.