Beer Styles Study Guide - CraftBeer.com

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Black (40+) Volumes of CO2 (v/v) : Volumes of CO2 commonly vary from 1-3+ v/v (volumes of dissolved gas per volume of liquid) with 2.2-2.7 volumes being the most common in the U.S. market. Beer’s carbonation comes from carbon dioxide gas, which is a naturally occurring byproduct created during fermentation by yeast and a variety of ...

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