^ âeucatastropheâ (US) / âeucatastropheâ (UK) in Oxford Dictionaries, Oxford University Press.
For cooked onions, you can find one answer here: http://www.stilltasty.com/fooditems/index/17825. 1  3-5 days in the refrigerator. 2  refrigerate withing 2 hours of cooking. 3  refrigerate in covered container or wrap tightly with heavy-duty aluminum foil or plastic wrap.
All cut onions that have leftover portions can be wrapped tightly in plastic wrap and stored in the refrigerator for up to 5 days. Store cooked onions in an airtight glass or plastic container. Do not store in a metal container because the metal can discolor the onions.