The Signal

Craft beer carbonatio­n, what it affects

- Rob MCFERREN Rob McFerren is the owner of Wolf Creek Restaurant & Brewing Co. COLUMNIST

Carbonatio­n in craft beer is an important aspect and the level of carbonatio­n can vary widely depending on the style of beer. The effects of carbonatio­n strongly influence a beer’s mouthfeel, flavor, aroma and appearance.

Without carbonatio­n a beer is considered “flat,” which would make it dull and lifeless. When a beer ferments, the byproducts of the yeast consuming the sugars created in the brewing process are ethanol (alcohol) and carbon dioxide gas. There’s some science involved that I won’t get into here, but the amount of carbonatio­n in the beer will vary depending on the temperatur­e and the pressure of carbon dioxide in the vessel (tank or keg).

Carbonatio­n levels range from low to high for different beer styles according to tradition and the brewer’s preference. Most craft beers are considered moderately carbonated, such as pale ales, IPA’s, amber/red ales, blonde ales, craft lagers and more. Some beers tend to have a lower amount of carbonatio­n and these include stouts, porters and brown ales.

Scottish, Irish and English beer styles also tend to be on the lower end of the carbonatio­n level range and this has been traditiona­lly the way these beers have been brewed in the British Isles for centuries. Most wheat beers will have a higher carbonatio­n level such as Bavarian Hefeweizen­s. These are only a few beer styles to give you an idea of the range of carbonatio­n.

Carbonatio­n is an important part of craft beer that will enhance your drinking experience while adding that refreshing quality that craft beer drinkers love. There are many more aspects of carbonatio­n in beer to explore, but this gives you a starting point to go from.

Life’s short, drink craft! Cheers!

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