Wrapping banana stems tightly can slow down ripening by reducing the release of a natural gas.
Keep bananas at room temperature, away from heat and sunlight, to help them stay fresh longer.
Once ripe, store bananas in the fridge to extend their freshness, even if the peels turn dark.
Bananas have a frustrating habit of going from perfectly yellow to spotted and mushy almost overnight. That’s why, whenever my parents buy a new bunch, my dad immediately reaches for the aluminum foil and wraps the stems before putting them on the counter. It seemed odd to me growing up, but there’s a reason so many people swear by this simple trick.
In fact, the idea has become so popular that it even inspired a product. Nana Hats are reusable silicone caps—complete with tiny decorative hats—that fit snugly over the stem of a banana bunch, doing the same job as foil or plastic wrap while adding a little whimsy to your fruit bowl.
Does Wrapping Banana Stems in Foil Work?
This trick comes down to ethylene, a natural plant hormone that bananas produce as they ripen. Most of that ethylene is released from the crown, or stem, of the bunch. By tightly wrapping the stems with aluminum foil or plastic wrap, you can reduce how quickly the gas escapes, slowing the ripening process for the entire bunch.
That said, don’t expect miracles. While some home tests have found that wrapping the stems can keep bananas fresh for a few extra days, others have seen little difference.
Wrapping the stems is just one piece of the puzzle. Where and how you store your bananas has an even bigger impact on how quickly they ripen.
Keep them at room temperature. Bananas ripen best on the counter. Avoid refrigerating them while they’re still green or mostly yellow, as cold temperatures can interrupt the ripening process.
Store them away from direct sunlight and heat. A cool spot on the counter is ideal. Heat speeds up ripening, so keep bananas away from sunny windows and warm appliances.
Separate them from other fruit. Apples, avocados, peaches, and tomatoes all release ethylene gas, which can cause bananas to ripen faster. If you want your bananas to last, give them a little space.
Refrigerate once they’re ripe. Once your bananas reach the perfect level of ripeness, you can move them to the refrigerator. The peels will quickly turn brown or black, but the fruit inside will stay fresh for several more days.