The presence of a larva, often referred to as a “worm,” in a bottle of agave-based spirit is a misconception linked to tequila. Authentic tequila, produced according to Mexican regulations and standards, will never contain a larva. This practice is exclusively associated with certain types of mezcal, another agave-derived spirit. The larva is typically a moth larva (gusano) that lives on the agave plant.
The inclusion of the larva in mezcal is a relatively modern marketing ploy, popularized in the mid-20th century. There is no traditional or historical basis for adding the larva to mezcal as a flavor enhancer or for any other practical reason related to the spirit’s production. Instead, it serves as a novelty designed to attract attention and differentiate a particular brand of mezcal from others. Furthermore, the purported hallucinogenic effects attributed to the larva are entirely unfounded. Any perceived effect is purely psychological or related to the alcohol content of the spirit itself.
