The right way to put ripe apples, ripe bananas and ripe pineapples is to surround them, which usually ripens in a cool place in a week. Never seal it, otherwise it will not ripen and rot, because the water vapor generated by pineapple fever will not evaporate. Remember to turn over every day, otherwise the bottom tissue will rot easily due to long-term extrusion. Don't be exposed to the sun for a long time, the skin is tanned, the meat inside is not ripe, and it will rot in a few days.

If the skin is ripe, press it by hand. If the skin is soft, it will be close to ripe. If the skin is hard, it must be raw. Smell the skin with your nose. If there is a little fragrance, it means it is ripe. It will not be very sweet, but it will be crisp. If the fragrance smells like honey, it will be ripe, sweet and sweet, but not crisp, and it will be sweet and crisp if it is frozen in the refrigerator.

The big tree pineapples sold in the street are all picked very raw and ripened with chemicals, which is not delicious. Even though the skin is blue, it will be delicious if it smells a little on the tree. When picking pineapples, knock with a small stick, and the crisp sound often cannot be cooked naturally, such as the flapping sound. If the voice is dull, such as Pippi, it can be cooked naturally.