Crabs are fresh aquatic products, which can be preserved for a short time without water. It is relatively simple to keep the bought crabs in a state that they can be eaten in about three days: choose crabs with strong vitality, tie their feet with gates to reduce the physical consumption of crabs, then put them in the freezer of the refrigerator and cover them with wet towels for preservation. When eating every day, choose crabs with insufficient vitality and sufficient vitality to continue to be preserved.

The way to tell is to touch the crab's eyes with your hands, and eat it first if you are not sensitive.

2. Put the fresh crabs in a plastic bucket/basin.

Choose robust crabs and prepare a plastic bucket/basin with a height of 30-50 cm. The inner wall of the plastic bucket/basin is smooth and difficult to get rid of. Put the crabs in, don't pile them up. Add water to half the height of the crab.

Don't cover the bucket/basin, check the crabs every day and eat the crabs with insufficient vitality in time, so as to preserve the crabs. When the temperature is not high, crabs can be kept for more than 5 days.

Extended data

Taboos for eating crabs:

1, dead crabs cannot be eaten.

Crabs have a lot of bacteria inside and outside. Live crabs can excrete bacteria through metabolism in the body; Once the crab dies, the bacteria in the body will multiply and decompose the crab meat, and some bacteria will also produce toxins, which will cause food poisoning if people eat it.

In addition, crabs contain more histidine, and the longer the crabs die, the more histidine they accumulate in the body. Even if the crab is cooked, this toxin is not easy to be destroyed. Histamine is a toxic substance. When it accumulates in the body to a certain extent, it will cause poisoning.

2. Crabs can't be eaten raw.

The body surface, gills and gastrointestinal tract of crabs are covered with all kinds of bacteria and sludge. Crabs often carry metacercariae and Vibrio parahaemolyticus of Paragonimus larvae. If it is not disinfected at high temperature, paragonimiasis will cause lung damage after entering the human body. If Vibrio parahaemolyticus invades human body in large quantities, infectious poisoning will occur, which is manifested as intestinal inflammation, edema, congestion and other symptoms. So crabs should be steamed and cooked thoroughly.

In addition, it should be noted that there is a way to eat crabs soaked in wine, which is also very dangerous. It is generally not recommended to eat at home.

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