When crabs are killed or die for other reasons, they should be eaten as soon as possible. Otherwise, crabs kept for a long time will gradually produce toxic substances. Generally, it should not be eaten within 2 hours at room temperature.

If possible, it can be stored in cold storage or refrigerator for about 6 hours, and the edible period of frozen dead crabs should not exceed 1 week, otherwise there will be risks.

Fresh-keeping method of crabs: raising at room temperature (fresh-keeping time is 5-7 days).

If the crabs you buy are bound, untie them when you save them and put them in a pot. Be careful not to fold, and then add water to the crab's mouth. If the water is too deep, crabs will suffocate due to lack of oxygen. Then put the crab in a cool and ventilated place. If the plastic basin or bucket is high enough, there is no need to cover it with a lid.

Empty half the water in the basin at night, then add half the water, so do it again every night.

On the fourth day, feed the crabs with a little minced ham, small fish or shrimp skin. When the temperature is not high, this method can generally be stored for more than 5 days or longer. In addition, it is still necessary to check crabs every day and eat them in time.

If you can't finish it in a week, you can't feed it in the refrigerator. The above method.

At this time, your spare bathtub can come in handy. The bathtub is large enough and the walls are smooth, so crabs can't escape.

Gently put the fresh crab into it, inject the water that has just passed the crab, let it stand up and breathe, and put a small amount of small fish and shrimp into the water according to the time needed to save it. The crabs fed in this way can last for more than 7 days or longer, and the survival rate of crabs with good quality can reach more than 95%.

Special reminder: If you don't eat it right away, please don't brush it, or the crab will die.

Eating crabs must be fresh, so it is important to learn to preserve them. According to the above steps, crabs are alive after 7 days of storage, and they are not afraid of dying halfway. However, crabs will become thinner if kept for too long, and eating them within 3 days will not affect the taste.