What avocado-based condiment is commonly used to garnish tacos?

The avocado-based condiment commonly used to garnish tacos is guacamole.

Guacamole is a Mexican avocado preparation, usually made by mashing ripe avocados with ingredients such as onion, chile, cilantro, lime juice, and salt. On tacos, it may be served as a spooned topping, a smooth sauce, or a chunky side. Its creamy texture and mild richness balance spicy salsas and seasoned meats.

Guacamole is not the same as pico de gallo, which is a fresh mixture of chopped tomato, onion, chile, and herbs. Crema is a cultured cream, while mole is a complex cooked sauce often containing chiles, spices, and sometimes chocolate. All three can accompany tacos, but guacamole is the avocado-based choice.

Taco garnishes vary by region and filling. Traditional tacos may also include chopped onion, cilantro, salsa, lime, radishes, or cabbage. Guacamole is especially common with grilled meats, seafood tacos, and tacos served in northern Mexican and Mexican-American styles.