Those things about oysters (1)

The difference between raw flies and oysters

Raw flies and oysters are very similar in appearance. Actually, oysters are a kind of oysters. There are 100 kinds of oysters in the world, and eating frogs raw can be regarded as the high flyers of oysters.

The biggest difference between raw yaks and ordinary oysters is that raw yaks eat more, have fuller meat, are richer in nutrition, and have stricter requirements on water quality or sterilization during breeding, so raw frogs can be eaten raw and are often eaten as sashimi in Japanese cuisine (if you cook at home, it is recommended to avoid bacterial infection).

Life and reproductive characteristics of oysters

Oysters live in intertidal zone and subtidal zone, and the water depth does not exceed 10 meter. You can see a large number of oysters adsorbed on the rocks when you go out to sea. Oysters mainly feed on microalgae and plankton in the ocean. The breeding season of oysters is from May to August every year, so there is a tradition in the west that R does not eat oysters (there is no R in the English letters of May, June and July every year). At present, 95% of oysters are triploid oysters cultivated by artificial breeding scientists. They can't reproduce. If they concentrate on growing meat, the meat will be more plump and delicious.

Those things about oysters (2)

Nutrition and efficacy of oysters

High nutritional value: Oysters are rich in protein, and protein needs a full range of amino acids, as well as rich in vitamins and minerals. At the same time, the fat and cholesterol content of TA is very low, thus improving fertility: oysters are said to be rich in zinc.

Zinc can maintain the health of reproductive system, promote the development of germ cells and improve the fresh quality of male tadpoles. Beauty beauty: Oysters contain minerals such as copper and iron, which can prevent iron deficiency anemia. At the same time, zinc can prevent dry skin, decompose melanin and promote skin metabolism.

Care for heart health: Oyster contains high content of taurine, which can not only protect myocardial cells from cardiovascular diseases, but also play an important role in the development of retina and central nervous system. Oysters are also high in calcium, which can prevent osteoporosis, and contain eight essential amino acids, among which lysine is the highest, which has a positive effect on improving human immunity.

Function of oyster shell

Besides meat, TA's shell is also very useful. Oyster shells contain more than 90% calcium carbonate, which can be used in many fields, such as medicine. It is a traditional Chinese medicine with the functions of calming the nerves, nourishing the heart, clearing away fire, calming the liver and calming the wind.

Those things about oysters (3)

Cleaning, cooking and preservation methods of oysters

Most of the artificially propagated oysters are treated and do not need to spit sand. Use a brush dipped in light salt water or baking soda to wash off the sediment on the shell. Oysters can be steamed or roasted, and must be cooked before eating.

Steamed meat without shell: put boiling water in the pot and steam for about 3 minutes.

Steamed oysters in half shell: Boil the water and steam for about 5 minutes.

Steamed oysters in whole shell: blanch them in a pot with cold water, and steam for 3 minutes after boiling.

Grilled oysters on charcoal fire: half-shelled, roasted on high fire for about 10 minutes until they creak.

Oyster fresh-keeping: Oysters are among the best among aquatic animals in terms of pressure resistance, and can survive for a long time even if they are dehydrated. After washing oysters at home, put them in a clean basin, cover them with a wet cloth and put them in a box for refrigeration, which can be kept for about 3 days.

Are there any inedible parts of oysters? What are the green and black edges inside?

Oysters can be eaten except the shell. Oysters are vegetarian shells that grow up eating seaweed. Green is generally undigested seaweed and a natural plant. The black periphery is the skirt of the oyster. The color of the skirt does not mean dirty, but it is related to the growth environment, congenital inheritance and eating algae of the oyster. As long as oysters don't stink or go bad, all of the above are edible.

Those things about oysters (4)

How to choose raw flies?

Look at the shape: raw flies generally bulge at the same time (steamed drums face down). The higher the protruding part, the fatter the meat. Don't buy two flat sides.

Touch the shell: Fresh shells are generally closed. If the shells are opened, you can touch them with your hands. If the shell closes immediately, it means it is fresh. Otherwise, they may not be fresh. Purchase is not recommended.

Listen to the sound: The deeper the sound, the fatter the meat. Similarly, you can hit the weight of the raw frog with your hand and choose the one with the larger weight.

Smell: Fresh raw North Korea smells like sea water, but it has no fishy smell. If the fishy smell is too strong, it means that it is not fresh or even rotten and cannot be purchased.

How to choose flying oil?

Oil consumption is a seasoning for cooking oysters, which is commonly used in families. Can remove fishy smell and increase umami flavor. When flying oil, you don't need vinegar, monosodium glutamate and pepper to cover up the smell of flying oil itself.

The top fuel consumption formulas are generally fly juice, water, sugar, edible salt and so on. If you put water in the first place, it is not fuel consumption, and it is not recommended to buy it. The dosage of common fly oil juice is generally below 50%, and other flavors will be used to enhance freshness, such as sodium glutamate. The formula is relatively complex, and the amount of high-quality oil-consuming juice is above 50%. The formula is simple, but the price is more expensive!

Those things about oysters (5)

Oysters can also produce pearls?

In addition to mussels, some marine shellfish can also produce pearls under certain circumstances, including some kinds of oysters. Their pearl making process is actually a process of TA against invaders. When oysters open their shells, parasites may take the opportunity to enter. At this time, oysters will produce a substance called mother-of-pearl to protect themselves.

These substances are distributed around parasites. With the passage of time, there are more and more mother-of-pearl, and pearls are gradually formed. The formation of pearls is not only related to the species of oysters, but also related to the quality of life. Freshwater oysters produce pearls in about 3 years, and saltwater oysters produce pearls in about 5-20 years.

Small oysters, great effect.

Oysters not only have rich nutritional value, but also have the function of purifying water quality. Put oysters in 1 container filled with sewage, and 5 liters of water can be filtered in 1 hour. Filtration can reduce suspended particles and excess organic matter in water and improve water quality. Now it has become one of the biological measures to treat sewage in many coastal areas of the world.

At the same time, a large number of oysters can gather on reefs to form oyster reefs, which are important coastal habitats. When typhoons and other disasters strike, TA can effectively reduce the impact of waves on the coastal zone and reduce shoreline erosion.