1, cold storage. Put the three-door blue crab in the refrigerator, keep the temperature at 5~ 10, cover it with a wet towel and save it. When eating every day, choose the ones with insufficient vitality first, and the crabs with sufficient vitality can continue to be preserved.
2, temporary storage pool preservation. If you can't finish the three-door blue crabs in three to five days, the best way to preserve them is to make your own bathtub as a temporary breeding pool and let them enjoy it first. Gently pour the crabs into the bathtub, fill them with water until they are just buried, so that they can breathe on the water surface when standing on their eight feet, and put a small amount of small fish and shrimp according to the storage time and quantity. Generally, the three-door blue crabs can be stored for more than 7 days or longer by this method, and the storage survival rate of good quality crabs can reach more than 95%.
Method of selecting crabs
1, see the reaction: in the process of selecting crabs, one hand can be used to take them out, and the other hand can touch the crab's eyes. If the eyes are closed quickly, it also means that the crabs are fresh, or after the crabs are taken out, the back is put down on the road, and the crabs can quickly rotate the right library, indicating that they are relatively fresh.
2. See the male and female: The best season to eat crabs is September and October every year. In September, the female crabs have more crab paste, which is delicious, while the male crabs have more tender crab paste in October. Therefore, when buying crabs in September, you can choose a female crab with a round navel, and you should choose a male crab with a triangular navel when buying crabs in October.
3, look at the back: when buying crabs, first observe the color of the back, the back is cyan, the crab is more tender, and then gently press the back and abdominal cavity of the crab, the back is hard and the abdominal cavity is bulging, which also means that the crab meat is thick. If the back is bright and moist, the abdominal cavity is dry and shriveled, it also means that the crab meat is less.