^ 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.
How Long are Leftovers Good for in the Fridge? If you want the short answer, not very long at all â about 3-4 days is a good rule. Once your hot meal sits out for long enough to cool down, itâs already starting the countdown to bacteria growth. Bacteria grows more quickly at room temperature.