Crab itself is a kind of cold food, which is not suitable for eating with cold fruits such as watermelon, pear, grapefruit and mangosteen, so as not to stimulate the stomach, cause the stomach to catch cold, and cause stomach discomfort.

2. Fruits with high tannic acid content

Crab is rich in protein, so it is not suitable for eating with persimmon, grape, grapefruit, plum, pomegranate and other foods rich in tannic acid, so as to avoid indigestion, abdominal pain and diarrhea.

Why crabs can't eat grapefruit:

Because crab is rich in high-quality protein, and grapefruit contains a lot of acidic components, these nutrients will interact, leading to precipitation and denaturation in protein, which makes it difficult for human body to digest and absorb. Besides, grapefruit and crabs are both cold, so you should not eat cold grapefruit when eating crabs, which will aggravate the body's cold gas and lead to physical discomfort.

Extended data

Precautions for eating crabs

1, steamed and cooked thoroughly, do not eat raw crabs.

River (lake) crabs feed on animal carcasses or humus, so the body surface, gills and gastrointestinal tract of crabs are covered with all kinds of bacteria and sludge. Some people don't get sick because they haven't washed and cooked the crabs thoroughly, or because they eat drunken crabs or pickled crabs raw, so how can they not get sick and eat them after steaming and cooking? There will be no such problem.

2, eat "fresh shine", dead crabs should not be eaten

After death, the rigidity period and autolysis period of Eriocheir sinensis are greatly shortened, and the bacteria in the crab will multiply rapidly and spread into the crab meat, causing vomiting, abdominal pain and diarrhea. The shell of the fresh crab is bluish-black, with luster, full navel and Bai Jie abdomen. However, the shell of the dying crab is yellow, and the crab's feet are soft, so it is difficult to turn it right.

3, steamed and eaten now, don't store it.

If you can't finish eating, the rest must be kept in a clean, cool and ventilated place. When eating, you must return to the pot and cook it thoroughly.

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