Beef should not be smoked, roasted or pickled to avoid carcinogens such as benzopyrene and nitrosamines. Eating iron-rich foods such as beef at night will interfere with the biological clock of the liver. Beef is rich in protein and amino acids. Chinese medicine believes that beef has the functions of invigorating the middle energizer, nourishing the spleen and stomach, strengthening bones and muscles, resolving phlegm and calming wind, quenching thirst and stopping saliva.
Method for selecting beef:
Take a look and see if there are any red spots on the skin. No red spots are good meat, and those with red spots are bad meat. Look at the muscles, fresh meat is shiny, red is even, and inferior meat is slightly darker; Look at the fat, the fat of fresh meat is white or light yellow, the fat of inferior meat lacks luster, and the fat of deteriorated meat is green.
Second, fresh meat has a normal smell, while inferior meat has an ammonia or sour taste.
Three touches: first, it should be elastic, fresh meat is elastic, and the depression immediately recovers after finger pressing, while inferior meat is poor in elasticity, and the depression recovers slowly or even cannot recover after finger pressing, and deteriorated meat is inelastic;
Fourth, feel the viscosity. The surface of fresh meat is slightly dry or moist, the surface of sub-fresh meat is dry or sticky, the new cut surface is wet and sticky, the deteriorated meat is seriously sticky, and the surface is extremely dry, but some meat with serious water injection is not sticky at all, but it can be seen that the surface is wet and not firm.
Reference to the above content? Baidu encyclopedia-beef