It takes about 10 days for the bought green bananas to mature naturally. The ripening time of green bananas will change according to the maturity and variety of bananas at the time of picking, which is about 7- 10 days. Self-cooked bananas generally have pits on their surfaces, commonly known as pockmarked bananas. When there are pits on the banana skin, it's time to eat.

If you want bananas to ripen quickly, you can first prepare a big plastic bag, put green bananas and ripe fruits in the plastic bag, then put some ripe fruits or apples, fold the mouth of the plastic bag, clamp it with a clip, and seal the bananas and ripe fruits. How to wait for a while, you can find that the banana skin turns yellow and the flesh is ripe. Because some fruits, such as apples, release ethylene, which can ripen bananas to some extent.

If the banana is rotten but not ripe, it may be that the banana is picked too early, because the banana is not fully developed, and even if it is ripened with ethylene, the taste and taste of the normal mature banana can not be achieved, resulting in that even if the banana skin is ripe and rotten, the pulp inside is not ripe.