How to Keep an Avocado from Turning Brown

Avocado is one of those ingredients that can take an average dish to a new, delicious level all on its own. From crisp salads to sizzling fajitas to your morning toast, almost anything can be enhanced by the creamy, green fruit (yep, it’s a fruit!). Onions aren’t just a tasty addition to guacamole—they’re naturally an avocado’s BFF: Brown-Fighting Friend, that is. Onions contain sulfur compounds that, when released, slow the oxidation that causes browning. Roughly chop up a red onion, place it in an airtight container, and lay your avocado half on top.