It can. You need to steam them at a high temperature before eating them.

Crab preservation methods:

1, if not eaten that night, you can wait until it cooled down wrapped in plastic wrap and put in the refrigerator, if possible, can also be frozen. But the refrigerator stored in the cooked crab at the latest do not exceed the next day at noon, and then eat again to remember to steam once again, eat the best put some ginger, favorable sterilization. This way to eat crab, to ensure that the enjoyment of delicious at the same time, but also take into account the safety.

2, save the cooked crab, if you want to eat, try to return to the pot to steam through before eating, but to be in the refrigerator freezer (not refrigerated) layer covered, because cooked crab and fog, dew and other toxic contact, the next day to eat must be cooked again, cooked in boiling water, to be heated for half an hour after the pot is opened to prevent the crab microorganisms have not been completely killed. Avoid eating crab without seasoning because of the cold nature of crab, eating crab should be accompanied by ginger, vinegar, etc., to prevent stomach injury. But if the flavor is changed, it is best to throw away although waste, but health is more important.

3, if the cooked crab short time preservation, can be covered with plastic wrap, placed in a cool ventilated place. Generally can be kept fresh for 6 - 8 hours, provided that the day is colder and the temperature is lower. If the weather is hot and you want to keep cooked crabs for a short period of time, you will have to put the crabs in the refrigerator freezer. This way the crabs at noon can be kept until evening, but not overnight. If you want to store cooked crabs for a long time, such as overnight, you'll have to put them in the freezer. However, direct freezing tends to cause cooked crabs to lose moisture and become dry and unpalatable. When freezing, you can freeze them together with the soup in which the crabs were cooked to preserve their fresh flavor.

Precautions for preserving cooked crabs

Cooked river crabs can be eaten overnight, but it is not the same as going into the safe after going into the refrigerator. Cooked crabs that have been stored for too long are still easy to cause poisoning killers. The principle is the same for the histidine mentioned above. Overnight in the leftover crab, histidine will be in the role of some microorganisms decomposition for histamine, back to the pot heating although you can kill pathogenic microorganisms, but can not destroy the toxin, so, eat stored too long cooked river crab, may also lead to histamine poisoning.

Because of the tenderness of the crab meat, it is best to cook and eat clean, and then put it into the refrigerator to save easy to lose nutrients. Therefore, it is better to cook them as you eat them. If you take cooked crabs out of the refrigerator, be sure to cook them thoroughly before eating them again