What is the main alcohol ingredient in a classic mule?

The main alcohol ingredient in a classic mule, specifically the Moscow Mule, is vodka. Vodka provides the smooth base that blends well with the spicy ginger beer and the tartness of lime juice, which are the other key components of this cocktail. Smirnoff vodka is one of the most recognized vodka brands and is often used in classic cocktail recipes. This choice aligns with the traditional preparation of a mule, where vodka is the primary spirit that gives the drink its foundation.

Other spirits listed, such as gin and tequila, do not align with the classic mule recipe. While variations of mules exist that use gin or tequila, they do not represent the traditional Moscow Mule, which specifically calls for vodka. Thus, selecting vodka as the main ingredient accurately reflects the authentic drink.