Crab yellow is rare may be the following three cases: one is the crab immature, the second is the crab death deterioration, the third is the crab is not steamed, etc.. This thin, uncooked, crab bitter, this time to pay special attention, in order to health considerations, it is recommended not to eat.

Crab immature, crab yolk is the product of the mother crab, such as the mother crab is not yet mature to eat, this time the crab yolk may be with a bitter taste, and the crab yolk is not yet molded, even after steaming will not have solidified state.

In the case of crab death and deterioration, a large number of bacteria and other microorganisms will breed in the body, resulting in the deterioration of the crab yolk bitter flavor, and the texture of the crab yolk will change, there is a phenomenon of thinning.

If the crab is not cooked, the crab yolk will be diluted, and if there is a bitter taste, it may be related to the bitter phenomenon that the crab is not processed cleanly, and the stomach of the crab contains dirt or other food with a bitter taste is eaten.