Let's say you have several leftover raw onion ringlets and a leftover section of avocado. Believe it or not... short term... SHORT TERM, RAW ONION SLICES CAN PRESERVE THE AVOCADO.
Let's say you have a leftover section of avocado, and no leftover onion. You do have a tiny unpeeled onion available. I can think of three potential uses for that onion. Can you?
ONION SIZE CHOICES: Don't forget you have them!