Question: When I buy a bunch of bananas, some always get too ripe before I’m ready to eat them. Is there a way I can prevent this from happening?
Answer: Yes — once the bananas have reached the ripeness you like, stash them in the fridge.
The cooler temperature of the refrigerator will slow down the spoilage process and keep the bananas tasty for about five more days.
Refrigeration may turn the banana skins dark, but as the U.S. Centers for Disease Control and Prevention points out, that won’t change the inside of the fruit itself.
Just be sure to wait until the bananas have reached your desired ripeness before placing them in the fridge. If you refrigerate under-ripe bananas, their flavor and texture won't develop properly.