2. Cooked beef is rich in protein, vitamin A, vitamin E, fat, zinc, magnesium, iron, zinc and other nutrients. Has the functions of strengthening tendons and bones and nourishing spleen and stomach. Cooked beef can generally be preserved for a long time after freezing treatment, and the nutrients in it are usually not lost. However, frozen cooked beef is cold, and there may be some bacteria on it, so it can't be eaten directly, otherwise it may damage the gastrointestinal mucosa of consumers, and it is prone to abdominal pain, diarrhea and other symptoms, which is not conducive to health. It is suggested that frozen cooked beef should be thawed first and then heated before eating. Generally speaking, it tastes better.