Place avocados in a paper bag with a banana or apple
Fold the top of the paper bag closed and leave at room temperature
Check every 12–24 hours and use when the fruit yields to gentle pressure
If you need faster results, add a warm spot (near a window or on top of a refrigerator)
Microwave (quick ripen): wrap in a paper towel, microwave 10–20 seconds, then check; repeat in 10-second bursts until soft
Avoid overheating; stop as soon as it gives slightly when pressed
Do not refrigerate unripe avocados
For partially ripe avocados, refrigerate to slow further ripening
To ripen cut avocados: keep flesh covered tightly with plastic wrap and refrigerate; use within 1–2 days