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How to ensure that the shrimp bought back is fresh within two days?
1, bottle preservation method

Put the fresh shrimp in an empty beverage bottle, fill it with water, tighten the bottle cap and freeze it in the refrigerator. In this way, the shrimp is completely isolated from the air and will not smell. Take out a bottle before eating and thaw it in advance. This method is simple and convenient, and the most important preservation is not easy to dry and not to smell. Because the shrimp is isolated from the air, the shrimp meat is as fresh as the new one, and it will not become dry wood, which can keep the freshness of the fresh shrimp well and the taste will not deteriorate.

2, fresh-keeping box freezing method

Cut off the shrimp whiskers and shrimp guns and put them neatly in a fresh-keeping box. Do not drain water, cover them and put them in the refrigerator for quick freezing. When eating, take a bigger fruit knife and gently pry it down, and it is still intact. This kind of shrimp tastes the same as the fresh shrimp just bought, and can be preserved when there are fresh shrimps in the next year.

Extended data:

Distinguish the freshness of shrimp:

1, fresh shrimp is bent. Fresh shrimp has a complete head and tail, which are closely connected with the body. The shrimp body is quite stiff and has certain elasticity and curvature. However, the head and body, shell and meat of stale shrimp are loosely connected, and the head and tail are easy to fall off or separate, which can not maintain its original curvature.

2. The surface of fresh shrimp is dry. Fresh shrimps are clean in appearance and feel dry by hand. However, when the shrimp body is about to deteriorate, the granular cells secreting mucus in the lower layer of the crustacean disintegrate, and a large amount of mucus seeps into the body surface, which makes it feel greasy when touched. If the shrimp shell sticks to your hands, it means that the shrimp has gone bad.

3. Fresh shrimps are bright in color. The colors of shrimps vary slightly with different species. The fresh prawns, Rocky prawns and grass prawns are blue, the shrimps caught in the sea are pink, and the bamboo prawns and metapenaeus ensis have black and white patterns with a slight pink color. If the shrimp has black hair, it is stale shrimp, and the whole shrimp is dark and not bright, which also means it has gone bad.