First, it is not suitable for eating raw crabs.
Crabs generally 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. Crabs often carry cysts of paragonimiasis and Vibrio parahaemolyticus. If it is not disinfected at high temperature, paragonimiasis will cause lung injury after entering the human body. If Vibrio parahaemolyticus invades human body in large quantities, infectious poisoning will occur, which is manifested as intestinal inflammation, edema, congestion and other symptoms. Therefore, crabs should be steamed and cooked thoroughly, and generally heated for more than 30 minutes after boiling to play a disinfection role.
Second, it is not advisable to eat cooked crabs that have been stored for too long.
Stored cooked crabs are easily contaminated by bacteria, so crabs should be burned and eaten now, not stored. In case you can't finish eating, the rest must be placed in a clean, cool and ventilated place. When eating, be sure to return to the pot and cook it thoroughly.
Third, it is not appropriate to chew.
Pay attention to the four clean-ups when eating crabs. First, clean the crab's stomach. Crab stomach, commonly known as crab urine bag, is a triangular bone bag in the center of the front edge of the back shell, which contains dirty sand; Second, we should eliminate the crab intestine, that is, a black line from the crab stomach to the crab navel; Third, clear the crab heart, commonly known as hexagonal plate; Fourth, we should remove the crab gills, that is, two rows of soft things like eyebrows that grow in the crab abdomen, commonly known as crab eyebrows. These parts are dirty and have no edible value. Don't chew them indiscriminately to avoid food poisoning.
Fourth, it is not advisable to overeat, even if you are greedy.
Because crab meat is cool, it is not advisable to eat more. People with spleen and stomach deficiency and cold should pay special attention to avoid abdominal pain and diarrhea. Abdominal pain and diarrhea caused by eating crabs can be taken with 15g warm Chinese medicine perilla, 5 ~ 6 slices of ginger and water.
Fifth, it is not suitable to eat with tea.
Do not drink tea water when eating crabs and within 1 hour after eating crabs. Because boiling water will dilute gastric acid, tea leaves will solidify some components of crabs, which is not conducive to digestion and absorption, and may also cause abdominal pain and diarrhea.
Sixth, it is not suitable for eating with persimmons.
When the crab is fat, you should pay attention to avoid mixing crabs and persimmons. Because tannic acid and other ingredients in persimmon will coagulate crab meat protein, the coagulated substance will ferment and rot in the intestine for a long time, causing vomiting, abdominal pain, diarrhea and other reactions.