Why do some tequila bottles have a worm on the bottom?

The creature you might be thinking of is actually a maguey worm, which is the larva of a moth that lives in the agave plant. It's sometimes used as a garnish for mezcal, another alcoholic beverage made from the agave plant, but not for tequila.

Here's why the misconception might exist:

* Mezcal often features the maguey worm: It's a traditional practice to include the worm as a garnish, often symbolizing quality and authenticity.

* Similarity in appearance: Both mezcal and tequila are made from agave, leading some to assume they share the same traditions.

* Marketing and tradition: The worm garnish has become a recognizable symbol of mezcal, even if it's not always present.

So, next time you see a bottle with a "worm," it's likely mezcal, not tequila.