You can't eat the meat at the head of the trough, because there are the most blood vessels, trachea and glands, and lymph glands belong to the immune organs of living things, so there will be a lot of viruses and bacteria in the meat at the head of the trough, which is very harmful to the body after eating, so the meat at the head of the trough is not suitable for eating. Even if you see low-priced meat, don't buy it

Now groove meat is regarded as junk meat by everyone. Not only does it taste bad, but it will also bring harm to the body, so most people are not interested in grooved meat. According to relevant regulations, canned meat needs to be removed. In regular slaughterhouses, canned meat can't pass quarantine, so there are fewer and fewer canned meat on the market.

The meat at the head of the trough is pale and has a fishy smell, and it will have obvious graininess when touched by hand, because it has many lymph nodes, lipomas and thyroid glands. Although the trough meat is inedible, there are still some black-hearted small restaurants that use the trough meat as ingredients and usually sell it as meat stuffing.