After buying the crabs, do not rinse them with water, put them in a clean tank or jar, use brown rice to add two eggs with broken shells, and then sprinkle two handfuls of black sesame seeds to submerge the crab cover, and then cover the mouth of the tank with a cotton cloth to make air It can circulate, but it can't make the crab see the sun. After raising it for about 3 days, take it out. Because the crab absorbs the nutrients from rice and eggs, the crab belly is firm and plump, and the repetition increases significantly, and it tastes fat and delicious. 4. Crabs are easy to move wind, so it is not easy to eat cold; in addition, do not eat dead crabs. Therapeutic effect: Crabs are cold in nature, salty in taste, and belong to the liver and stomach meridians; It has the effects of clearing away heat and detoxification, replenishing bones and marrow, nourishing muscles and bones, promoting blood circulation and removing phlegm, removing dampness and relieving jaundice, strengthening limbs, nourishing liver and yin, and filling stomach fluid It has a certain therapeutic effect on congestion, jaundice, waist and leg soreness and rheumatoid arthritis.