First of all, buy crabs. Generally, if the ginger and onion are fried, the crab is more delicious. Of course, steaming is also good. Wash crabs, remove gills, intestines and other xx things. Then cut into pieces for use. Dice scallion, cut the rest, chop garlic and shred ginger. Add oil to the pan, first saute the scallion, garlic and shredded ginger, then pour the crab pieces, stir fry twice, and pour the yellow wine. Remember, it's yellow wine. Shaoxing wine and Huadiao wine are yellow wine. Then add a little salt, soy sauce, oyster sauce, and the crab is a sea crab, which has its own salt, so you don't need to add too much salt, continue to stir fry, then add a little pepper, add the onion, stir fry twice, and you can go out. Crabs are easy to cook in a big fire, so don't fry them too hard. If they turn red, they will be cooked. This method is very simple, everyone can make delicious fried crab with ginger and onion, so there is no need to be cheated in the seafood market.