Crab can be preserved either frozen or refrigerated, depending on the duration and purpose of preservation.

If the crabs only need to be kept for a few days, they can be kept in the freezer. The temperature in the freezer is usually between 0°C and 10°C, a temperature range that slows down the crab's metabolism and prolongs its life. When storing crabs in the freezer, it is best to place them on a damp towel or paper towel to maintain humidity.

If you need to keep crabs for a long time or want to preserve them for later use, you can freeze them. Freezer temperatures are usually below -18°C. This temperature freezes the crabs quickly and prevents bacteria from multiplying and crabs from spoiling. When freezing crabs, it's best to place them in a ziplock bag to retain moisture and prevent odors.

Crab cleaning method:

1, in advance to prepare a pot of about 45 ℃ of warm boiled water, and then the crab belly up one by one into the water, wait for it to turn over, come back to the time when it has long been drinking boiled water choking dizzy.

2, this is mainly to accelerate the crab spit out the body impurities, followed by reducing the crab's vitality, and then take out a soft-bristled toothbrush, grasping both sides of the crab, with a soft-bristled toothbrush with the force to clean up the back, abdomen and lips.

3, brush clean after cleaning the Yangcheng Lake hairy crabs on both sides and feet and pincers root; then grasp the double pincers, with a soft-bristled toothbrush handle from the bottom up to pick double pincers at the joints of the bones, with the crab thumb and ring finger to grasp the crab pincers along the pincers root upward with the strength of the crab pincers.

4, for the vitality of the larger crabs, first to the Shu Zhang pressure two pointed pincers or knocked two times and then open the abdominal cover, in the middle of the feces from the inside out to squeeze.

5, finally clean the crab's abdominal cover inside the dirt and crab pincers, and finally wash again with water can be.