1. Steaming crabs directly is delicious and simple, and it can also keep the crab itself delicious. There is no need to add salt when steaming. If the taste is monotonous, you can dip it. Generally, steaming 10- 15 minutes is more appropriate, only steaming is not too old.

2. Eriocheir sinensis often burrows in mud dikes of rivers, lakes and swamps, and generally moves at night, feeding on fish, shrimp, animal carcasses and grains, so Eriocheir sinensis is easy to carry bacteria and parasites and needs to be thoroughly heated before eating.

3. The crab itself will have some fishy smell. When eating crabs, it is best to eat them with some ingredients that can remove the fishy smell, such as ginger, garlic, vinegar and cooking wine.

4. River crabs grow in fresh water and breed in river water. Are young crabs before reproductive migration. Because their shells are light yellow, they are commonly known as "yellow crabs". When they molt for the last time, they will develop into "green crabs" with dark green shells.