Crab yellow refers to the ovaries and digestive glands in crabs. It's orange and delicious. Crab yolk contains eggs that have not been excreted, but there are other organs, glands, tissue fluid and other substances of the crab, not just crab eggs. When the crab roe becomes large and bright orange, it shows that the gonad of the female crab is mature. Crab yellow is rich in nutrients such as protein and phospholipids, but it also contains high content of oil and cholesterol. There are two kinds of crab yellow: river crab yellow and sea crab yellow.

Crab shit, which belongs to crabs, is in their stomachs. Steamed crabs are white and can't be eaten. The seat is under the crab's mouth. Just move the crab shell.

Crab excrement and crab roe are easy to distinguish, one is on the big shell of the crab and the other is on the bottom of the crab. There are great differences between the two colors and their positions, so it is easy to distinguish them.