What is the main characteristic of the production of mezcal compared to tequila?

The main characteristic that distinguishes the production of mezcal from tequila is that mezcal is traditionally smoked during its production. This unique process involves roasting the agave hearts in underground pits, which imparts a distinct smoky flavor to the final spirit. The choice of cooking method is one of the key factors that contribute to mezcal's diverse flavor profiles and character, setting it apart from tequila, which is typically steamed in ovens.

While other options touch on certain aspects of mezcal or tequila production, they do not highlight as fundamental a difference as the smoking process does. For instance, fermentation methods can vary but are not exclusive to mezcal; both spirits may utilize open-air fermentation depending on the producer's practices. Similarly, the use of aromatic herbs is not a defining feature of mezcal production. Bottling unaged refers more to how the spirit is presented rather than a distinguishing characteristic of its production process; both mezcal and tequila can be found in unaged forms.