1, look at the appearance and color of crabs. Fresh and fat crabs, the back color is blue and bright, the belly color is white, and the deeper and darker the belly lines are, the fatter the crabs are, but the crabs with black bellies cannot be used; The navel of the crab should be prominent and red or yellow, indicating that the crab yellow (paste) is full.

2. Knead hard and soften by hand. Gently pinch the navel and calf roots of crabs with your hands. If it feels hard, it means it is a strong and fat crab. If it feels soft, it means that the crab is empty and there is little meat, and it is even more impossible for crab yellow and crab paste to be full.

3. Weigh by hand. Fresh and full crabs feel heavier. If you can't feel it, you can compare two crabs of the same size. Heavier crabs mean that they have more meat and are full of yellow (cream), while crabs have less meat and yellow (cream) is not so full.

Put the crab in the refrigerator;

Crabs are fresh aquatic products, which can be preserved for a short time without water. It is relatively simple to keep the bought crabs for about 3 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.