The crab yolk is the ovary and digestive gland in the crab's body, which is orange in color and delicious in taste. Crab yolk is not the eggs of crabs, but there is a fundamental difference between the two. Crab yolk contains egg cells that have not been discharged from the body, but there are other crab organs, glands, tissue fluid and other substances, not simply crab eggs. At this point in time, the production of the crab eggs is discharged from the body, and the egg cells that remain in the gonads of the body are still part of the crab yolk.
The male crab possesses a spermatophore, and the white substance inside is sperm, and the sperm and sex organs of the male crab are crab paste. Crab paste may also be fat. Because male crabs gradually accumulate fat and grow into crab paste (commonly known as crab oil) in preparation for winter. When you peel off the shell of a male crab, you can see a white, sticky substance in the middle of the shell and the lump of crab, which is crab paste (crab oil). When cooked, the crab paste becomes translucent. The more crab paste, the stronger the male crab.