Choose strong crabs, prepare a plastic bucket/basin with a height of 30-50 cm, put the crabs in it, and don't stack them; Then add water to half the height of the crab body, mainly to keep it moist. You can't bury all the crabs, and you don't need to cover the bucket/basin. Check crabs every day and eat crabs with insufficient vitality in time. In this way, Yangcheng Lake hairy crabs can be preserved for more than 5 days at low temperature.

Extended data:

nutritive value

Portunus is tender and white, rich in protein, fat and various minerals. Swimming crabs are the strongest in winter, generally weighing about 250 grams, up to 500 grams. The red mud of the female crab is covered and tastes excellent. Swimming crab can be eaten fresh, steamed, stir-fried, or stir-fried, or stewed in bean paste, or fried with crab to make rice cakes, pickles and tofu, which is a common dish on the table of residents in coastal areas.

It can also be pickled, that is, the fresh Portunus trituberculatus is soaked in brine and can be eaten in a few days, commonly known as "fresh wind catching crabs". In the past, due to the high yield of Portunus trituberculatus, fishermen often chose live crabs covered with paste, put yellow in bowls, and let them solidify in the wind, rain and sun to become "crab yellow cakes", with excellent flavor, but low yield, which is difficult for ordinary people to taste.

Baidu Encyclopedia-Portuguese