What process converts agave sugars into alcohol during tequila production?

Fermentation converts agave sugars into alcohol during tequila production. After cooked agave is crushed and its juice or extracted sugars are prepared, microorganisms transform fermentable sugars into ethanol and other compounds.

Fermentation takes place before distillation. Yeasts consume sugars and produce alcohol, carbon dioxide, and flavor compounds. Producers may rely on naturally occurring microorganisms, selected yeasts, or a mixture of methods, depending on the distillery and recipe.

Distillation then concentrates the alcohol and separates components of the fermented liquid. It does not create the original alcoholic fermentation; it refines and concentrates what fermentation has produced. Aging is a later optional stage for categories such as reposado and añejo.

The sugars come from the cooked blue-agave piña. Cooking helps convert complex carbohydrates into fermentable sugars, which is why agave preparation is essential before fermentation can begin. The result is a fermented liquid often called mosto before distillation.