Updated 31 July 2026 · Written by Daniel Wright
To keep guacamole from browning, press plastic wrap directly onto its surface so no air touches it, or pour a thin layer of water over the top and drain it before serving. Extra lime juice also helps. Browning is caused by the avocado reacting with oxygen, so the key is sealing the air out.
Press plastic wrap onto the surface, or add a thin water layer on top (pour off later). Extra lime juice slows browning too.
Best Ways to Prevent Browning
- Press plastic wrap directly onto the surface so no air is trapped above it.
- Add a thin layer of water or lime juice on top, then pour it off before serving.
- Stir in extra lime or lemon juice, whose acid slows the reaction.
- Store it in an airtight container to limit air exposure.
Why Guacamole Browns
Cut avocado reacts with oxygen in the air, which turns the surface brown through oxidation, the same process that browns a sliced apple. It is a cosmetic change and still safe to eat. Blocking the air with wrap or water is the most effective fix. Start with a properly ripe avocado; see how to ripen avocados fast. Store it in a sealed container.
Frequently Asked Questions
How do you keep guacamole green?
Seal out the air. Press plastic wrap onto the surface or cover it with a thin layer of water, and add extra lime juice to slow oxidation.
Is brown guacamole safe to eat?
Yes. Browning is just oxidation on the surface and is harmless. Stir it in or scrape it off; the guacamole underneath is fine.
