But protein always wants to add. Especially when people are old, because of the change of eating habits, it is easier to lack protein. Then, it is a good idea to eat fish once or twice a week.
An ugly big man.
Grouper is a big family, and most of them belong to tropical and subtropical fish. There are about 60 species, distributed in China's coastal areas, mainly distributed in the southeast coast of China and the Xisha and Nansha seas. Among them, there are more than ten kinds that are most commonly eaten and farmed on a large scale, and friends in the south may be able to count as many as a few treasures.
Epinephelus coioides has a big body and a big mouth, and many "blocks" are quite big, with a body length of more than one meter. In addition, they are often gray-black and ugly in appearance. Of course, there are smaller varieties.
Now, many groupers have been bred by humans. Grouper is a very popular kind of deep-sea fish. In addition, the adult grouper usually takes 10 years. Many groupers we eat are actually immature fish.
High nutritional value.
In fact, although the grouper is not beautiful, its nutritional value is still very good.
1. Grouper is tender and white, similar to chicken, and is known as "sea chicken". Epinephelus coioides is rich in protein and a variety of delicate amino acids, and its meat is delicious, so it is particularly popular.
2. Grouper is a low-fat fish. Replacing pork, beef and mutton we usually eat with grouper can reduce fat intake. For the elderly who are prone to hyperlipidemia, cardiovascular and cerebrovascular diseases and hypertension, it is necessary to control fat intake.
3. The content of mineral zinc in grouper is also excellent, and zinc can maintain some important functions of the body. Generally speaking, the content of zinc in vegetable and other plant foods is very small.
Watch out for ciguatoxin.
Although the grouper is delicious, it needs to be careful, because there may be a natural dangerous molecule-ciguatoxin in the grouper.
Grouper itself is not toxic, and ciguatoxin comes from seaweed. Small fish eat seaweed, big fish eat small fish and grouper eat toxins in this way.
From the appearance, smell or meat quality of a single fish, it is impossible to judge whether the fish is poisonous or not. What's more, the most elusive thing is that ciguatoxin is very heat-resistant. Even high-temperature cooking and freeze-drying can't remove toxins.
Carcinotoxin is a strong neurotoxin, and eating 0. 1 microgram can kill people.
Remember four points to prevent poisoning.
In order to avoid poisoning, we must pay attention to four points:
1. Be especially careful of big fish weighing more than three pounds. The bigger the fish, the more toxins may accumulate in the body.
2. Try not to eat fish heads, fish eggs and internal organs. Because the fish head, fish eggs, fish skin and internal organs are rich in ciguatoxin, which can be as high as 50 to 100 times that of other parts.
It's best not to drink alcohol when eating grouper, but to eat peanuts and beans. This may aggravate the poisoning symptoms of ciguatoxin.
4. If you have symptoms of poisoning and discomfort after eating grouper, you must seek medical advice as soon as possible.
Of course, grouper is a very nutritious fish. There are a lot of fish now, so it will be safer. Don't worry too much.
If you want to eat, you'd better eat less at a time, and try to buy a smaller grouper when choosing. Remember to throw away the fish head, skin, viscera and eggs when eating.
Steamed food tastes good.
A grouper, a little cooking wine, a little shallots, ginger, etc. Steamed fish with a little soy sauce and cooking oil.
1. Put the live fish into a clear and clean plate, add a little cooking wine, and put some shredded ginger on the surface and inside of the fish;
2. After the water boils, add the fish and steam for 10 to 15 minutes;
3. Take out the fish, pour out the excess soup, add chopped green onion and soy sauce to steam the fish;
4. Heat the cooking oil in the pot, pour it on the fish sprinkled with chopped green onion, steam the fish with soy sauce, and serve.