Watermelon can generally be eaten overnight, but it needs to be kept fresh in the refrigerator to prevent deterioration. Watermelon is usually inedible if it is not kept in the refrigerator. After a night, the watermelon will go bad and can't be eaten.

Although the cut watermelon has a short shelf life at a high temperature above 30℃; However, if it is packaged with plastic wrap immediately after cutting and stored in a refrigerator at a lower temperature, it can also be stored for more than ten hours. Therefore, this kind of watermelon stored in the refrigerator overnight after cutting can still be eaten, but it is best to cut off a layer of watermelon and throw it away when eating.

Skills of selecting watermelon

1, watch the color and listen

Melons with smooth surface, clear patterns, obvious lines and yellow bottom are ripe melons; The surface is fluffy, dull and mottled, which is an immature melon; Playing a melon with your fingers and hearing the sound of "pengpeng" is a ripe melon; Those who hear the sound of "Dangdang" are not ripe, and those who hear the sound of "poop-poop" are ripe melons.

Step 2 look at the melon handle

Green is ripe melon; Dark brown, fluffy, fragile, curly beard tip turned yellow and withered, which is a melon picked prematurely; The handle of the melon has dried up and it is a "dead vine melon" with poor quality.

Step 3 look at the head and tail

The two ends are symmetrical, the navel and pedicel are deeply sunken, and the good melon is full around; The quality of melons with big head and small tail or thick pointed tail is poor.

4. Specific elasticity

The skin of melon is thin, and it is fragile when pressed with fingers, which is a cooked melon; It is easy to crack when scratched with nails. The melon is soft and ripe.

The above contents refer to Baidu Encyclopedia-Watermelon.