Storing & Ripening Bananas
Never store unripe bananas in the refrigerator! They simply will not ripen properly because the cold interferes with the ripening process. Bringing refrigerated bananas back to room temperature will not reverse the process. However, once bananas are ripe, they can be refrigerated for up to two weeks. Take note that their skins will turn black. Give yellow-green bananas time to ripen at room temperature to a sunny yellow color, from one to three days, or they will taste astringent and be difficult to digest. Ripen plantains at room temperature. They may take up to three weeks to soften and ripen to a dull yellow color mottled with numerous black spots. Most fruits give off an ethylene gas in the process of ripening. Because bananas release a higher concentration of ethylene gas, they ripen quickly. If you've bought green bananas and want to accelerate the ripening, place them into a paper or plastic bag. Adding an apple to the bag will encourage faster ripening. To take advantage of very ripe bargain bananas, simply peel them, cut them into chunks, and wrap them in plastic. Tuck them into the freezer and use as needed for smoothies, or defrost and mash them for baking or making fruit sauces.