Bananas used to spoil so quickly in my kitchen that I nearly stopped buying them—until I realized the fruit bowl was the problem. Bananas are extremely sensitive to ethylene gas, which they release in large amounts. When stored with other fruits like apples or avocados, this gas builds up and speeds up ripening, turning bananas brown and mushy fast. Simply keeping them on a separate spot on the counter can extend their freshness by several days.
An even better trick is wrapping the banana stems with aluminum foil or plastic wrap. Since most ethylene escapes from the stems, sealing them slows the ripening process dramatically—up to 10 days or more. Keeping bananas in a bunch also helps, as separated ones spoil faster. For already-ripe bananas, the fridge works well too; while the peel may darken, the fruit inside stays fresh longer. With these simple storage changes, bananas can last weeks instead of days, saving both money and food waste.