The bitter taste is due to the fact that hairy crabs are not yet mature, and when they are mature, the taste will naturally not be bitter.

And, crabs have very high requirements for bait and water quality, mixing contraceptive pills into the bait will kill the crabs.

Bitter crab paste is edible because the bitterness is not caused by spoilage!

The crab itself is a highly seasonal, short-lived food, and even if there are traces of heavy metals, they will not be present in the human body for a long time. Generally speaking, 1-2 crabs at a time is enough, from a nutritional point of view, it contains high cholesterol and protein, not easy to digest.