The reason why the gastrointestinal part of the king crab is inedible is related to the growth environment of the king crab. King crab is a creature that grows in the deep sea, and its position from the sea surface is relatively low. When it preys in the deep sea, it will inevitably absorb some metals and soil pollution, leaving a lot of bacteria. Once the gastrointestinal tract is not cleaned, it is easy to cause metal residues.

In addition, the yellow stripes on the king crab may be gills or pancreatic organs, not crab yellow, so it can't be eaten. King crab belongs to sea crab and has no crab yolk.

Whether it is a male crab or a female crab, the soft Huang Dou is actually the dirty pancreas of the crab, and the hard yellow of the female crab is the gonad, so don't eat the yellow organs in the king crab, just eat the legs.

Extended data:

In western countries, king crabs are eaten without crab paste and crab roe, because crab paste and crab roe are not full, or even less, if it is not in the breeding season.

King crab is difficult to catch and the cost is high. Of course, the nutritional value of crab paste and crab roe is higher than that of crab meat, but it also gathers most harmful heavy metals and organic substances, so the king crab does not eat crab roe.

Strictly speaking, the king crab is not a crab. Generally, crabs have four pairs of feet and one pair of claws, such as hairy crabs and swimming crabs that are eaten on weekdays. King crab belongs to deep-sea crab, and eating king crab has become popular in western countries. Western countries pay more attention to eating crab meat than crab roe and crab paste.

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