Crab is delicious and nutritious, which is one of the favorite food for many people. Many friends who like to eat hairy crabs will choose to buy a lot of them at one time for later consumption. However, we know that seafood is not easy to preserve. Once the crabs die, they will not be fresh. So how to preserve the hairy crabs? Follow Xiaobian to preserve the crabs in this way, they will be fresh.
How to keep crabs fresh: storage at room temperature and humidity
1. Put the crabs in the box or basin and spray water regularly. The crabs have strong vitality. As long as the room temperature is between 15 ℃ and 25 ℃, they can be stored indoors. Put the crabs in a spacious box or basin and spray some water regularly to ensure the humidity of their environment. This kind of crabs can survive for 3-5 days.
2. If you buy too many hairy crabs, you can also put them in the bathtub. The four sides of the bathtub are smooth, which can ensure that the hairy crabs will not escape from prison. Put an appropriate amount of water (less than 1 ~ 3cm thick) in the bathtub to ensure the humidity of the hairy crabs. Then put some small fish, loach, live shrimp as their food, which can be raised for 5 ~ 10 days and can be caught at any time.
Tips: the hairy crabs raised at room temperature must not be washed in advance. Brushing will do great harm to the hairy crabs and lead to a large number of deaths.
3. Prepare a 30-50 cm high plastic bucket / basin by adding water for living. The inner wall of the plastic bucket / basin is smooth and not easy to escape. Put the hairy crabs in it, do not stack them; then add water to half the height of the hairy crabs, so as to keep moisture. Do not bury all the hairy crabs. If the water is too deep, the crabs will suffocate due to lack of oxygen. Don't cover the bucket / basin. Check the crabs every day and eat them in time. When the temperature is not high, the crabs can be stored for more than 5 days.
Note: no matter which way, it is recommended that the crab's feet be tied up, which can reduce the crab's physical consumption, and the crab is not so easy to die of fatigue. In addition, if the hairy crabs are too thin or want to be stored, you can feed them some sesame seeds or broken eggs and add some yellow rice wine to fatten them.
Warm tips: Crab living is not equal to soaking in water. Hairy crab living needs water, but can't soak in water. Hairy crabs need a certain amount of water to keep the humidity of the environment and reduce the temperature at home. But hairy crabs can't soak in the water, especially in deep water. Hairy crabs need to breathe. If they soak in the water for a long time, they will suffocate and die.
How to keep crab fresh: Cryopreservation
1. Refrigerate crabs in the refrigerator. It's best to keep them in a cool environment. The refrigerator is the best preservation environment. If the vitality of crabs is strong enough, you can tie up the feet of crabs, which can reduce the physical consumption of crabs. Tie the hairy crabs one by one with ropes, and then put them one by one in the fresh-keeping layer of the refrigerator. Then take a clean towel, wet it with water, gently twist it, and spread it on the hairy crabs. In this way, the hairy crabs can be preserved for 2-3 days without death or deterioration.
Tips: when eating every day, first pick crabs with insufficient vitality from the cold storage room to eat. Crabs with enough vitality can continue to be preserved. The way to distinguish the vitality of crabs is to touch the eyes of crabs with your hands. If you are not sensitive, eat them first.
2. Refrigerated hairy crabs are cultivated in many places in China, among which Yangcheng Lake in southern Jiangsu is the most famous. At the same time, Yangcheng Lake is also the main production area of hairy crabs in China. Many places in China will buy hairy crabs from here. These hairy crabs are frozen and transported to all parts of the country. Therefore, the purchased hairy crabs can also be frozen in the refrigerator, It can be thawed before eating. It can keep hairy crabs fresh for 1 ~ 2 months.
How long is it better to keep the bought crabs
Generally speaking, if indoor temperature does not exceed 15 ℃, need not put freezer. Under normal conditions, it can be stored for 5-7 days, but if the storage time is too long, the hairy crab will be thinner, and eating within 3 days will not affect the taste. The experience in life is that crabs are best preserved for no more than three days. As time goes on, crabs will lose weight. They need to consume nutrition and taste much worse.
Can you still eat hairy crabs
You can't eat it.
Hairy crabs carry a lot of fungi and parasites, and lose their immunity after death. The fungi in the body will multiply in large quantities, consume the protein in the body of hairy crabs, and produce toxins. Such hairy crabs are not suitable for eating, so as to avoid food poisoning.