OvernightThe easiest way to ripen avocados overnight, is by placing your avocado in a paper bag with a banana, and folding the bag to seal it.Bananas produce ethylene gas, a plant hormone that aids ripening. The closed brown paper bag traps the gas inside to speed up the ripening time.
OvenWrap the whole avocado in tinfoil and set it on a baking sheet.Put it in the oven at 200°F for ten minutes, or until the avocado is soft (depending on how hard it is, it could take up to an hour to soften).
MicrowaveCut the avocado in half vertically and remove the pit.Wrap each half in microwave-safe plastic wrap and microwave on high for two minutes.
Notes
Expert Tips for Ripening Avocados
Tip 1: When placed in a paper bag, fruits such as apples and kiwis work just as well as bananas, as they all contain ethylene gas which is required for ripening.
Tip 2: After removing your avocado from the oven, place in the refrigerator to reach the desired effect even faster.
Tip 3: When cooking in the microwave, cook for 30-second intervals on medium-high until desired softness is achieved. This will ensure that you don't cook it for too long.