Soaking in salt water is the most commonly used method to spit sand in Meretrix meretrix, which is usually soaked in salt water for about 2 hours. It is indeed possible to spit out the sand with salt water bubbles, but this method is time-consuming and cannot spit out the sand immediately. It is necessary to repeat the impregnation several times before the impregnation is completed.
Clams are soaked in warm water of about 50 degrees. When they are immersed in water, they feel dangerous. At this time, they will absorb more water to protect themselves and spit sand crazily, which usually takes only 10 minutes to complete. This process must pay attention to controlling the temperature. If the temperature is too high, they will be cooked and cannot spit out sand completely.
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Meretrix meretrix, also known as clam, has many varieties, such as flower clam, Meretrix meretrix, Xishi tongue and so on. Its meat is so delicious that it is called "the freshest in the world" and "the crown of all flavors". There is also a saying in Jiangsu that "eating clam meat makes all tastes fail". The nutritional characteristics of Meretrix meretrix are high in protein, trace elements, iron, calcium and fat. Many shellfish also have the above characteristics. It is the meat of cladocera or various other clams. Produced in coastal areas of China.
Clam meat is rich in nutritional value. 100g clam meat contains protein 10g, fat 1.2g, carbohydrate 2.5g, and various minerals and vitamins such as iodine, calcium, phosphorus and iron, while clam shell contains calcium carbonate, calcium phosphate, magnesium silicate, iodine and bromide. Modern medical research has found that there is a substance called clam element in Meretrix meretrix, which has anti-cancer effect of inhibiting tumor growth.