How long must a mixto reposado tequila be aged?

A mixto reposado tequila must be aged for a minimum of two months. This aging period allows the tequila to develop additional complexity and flavor, differentiating it from unaged tequila. The term "reposado" specifically refers to tequilas that have been aged in oak barrels for anywhere between two months and one year. This maturation process contributes to the smoothness and character of the final product, allowing it to absorb aromas and flavors from the wood, which can range from vanilla to spice.

In contrast, options suggesting longer aging periods wouldn’t apply to mixto reposado tequila, as the aging requirements for reposado do not extend beyond one year. Therefore, the correct answer is based on the established regulations governing the aging process of mixto reposado tequila.