1, Crab shit: Crab's sundries are all in the crab's stomach (crab shit), and the steamed crab's stomach is white and can't be eaten. It is located under the crab's mouth and can be seen by moving the crab shell. The color is mostly gray-black;

2. Method of selecting high-quality crabs:

A look at crab shells: all shells are dark green with light, thick and strong, and the shells are yellow, most of them are very thin.

Second, look at the navel: the navel is prominent, a ship is fat and fat, and the concave is short of fat.

Third, look at the pincers' feet: where the pincers' feet are full of fluff, they are old and healthy, while the pincers' feet are soft and fluffy.

Fourth, look at the vitality: turn the crab upside down, the abdomen is facing the sky, and the thorns can be turned back quickly. Irreversible vitality is poor, and storage time cannot be long.

Five, look at the male and female: the female crab is selected in September and the male crab is selected in October. The female crab eats yellow and the male crab eats cream. Pick a female crab and see how many layers there are under its round navel. It's usually delicious with three layers. Full of butter and oil. When it grows to the fifth floor, the yellow is very hard. Pick a male crab and see if the left and right pieces above the navel of the triangle are yellow. When it is yellow, there is usually cream. If it is white, it may be that the shell crab has no cream.

3. Identify the male and female crabs:

Distinguishing between men and women depends on the navel. The round one is a female crab, and the pointed one is a male crab. There is also a semi-pointed and semi-circular navel, which is a virgin crab, and the crab yellow of the virgin crab is not much. There is also an extra-wide and extra-large round navel called ovulation crab, which is mostly an empty shell.