What is the main ingredient in guacamole?

The main ingredient in guacamole is avocado. The fruit supplies the dish’s creamy texture, rich flavor, and much of its nutritional character, while salt, lime juice, onion, cilantro, and chili peppers are commonly added for seasoning.

Guacamole originated in Mexico and descends from an avocado preparation associated with Mesoamerican cuisine. Its name comes from the Classical Nahuatl word āhuacamōlli, meaning “avocado sauce.” Traditional preparation involves mashing ripe avocados, often with salt, in a molcajete, a stone mortar and pestle.

Lime, onion, and tomato are frequent additions, but none is the defining base. Recipes vary widely, and some modern versions include sour cream, basil, or even peas. Exposure to air causes avocado flesh to brown through enzymatic oxidation, which is why guacamole is usually covered tightly and served soon after preparation.