Crab bitterness is generally due to the bitter yolk, bitter for a number of reasons:

1, crab yolk bitter or crab water quality is too poor

Currently, the domestic crab price is very expensive, so that the breeding of crabs can be profiteering, a lot of farmers will be converted to the original paddy fields into a crab breeding bases, paddy fields, the water circulation is very slow, the quality of the water is also very poor, so that the breeding out of the crabs by the more serious pollution, the body will naturally enrich a lot of harmful substances, making the meat and crab with a bitter taste. The water quality is also very poor, so the crabs from this kind of farming are subjected to serious pollution, and their bodies are naturally enriched with a lot of harmful substances, which makes the meat and crab yolk with a bitter flavor.

2, crab yolk bitter or not enough time crab net

Generally speaking, crabs need to be placed in clean water for a period of at least two days after the purchase of the excretion of the net, this period of time, the crabs did not eat, the body of the stains will all be discharged clean, can be if the net time is too short, the crabs do not have to raise the net, when consumed, naturally, will also be with a somewhat bitter flavor.

3, crab yolk bitter or crab with drugs

Crab, loach, eel, etc., the use of drugs in aquaculture is currently an open secret within the aquaculture industry, eel, loach and other survivability before the main use of growth hormones and a small amount of antibiotics can be used, and the crab by the impact of the water quality is relatively large, but also the need to use other drugs to control the growth cycle and mortality rate, if the drugs are not discharged cleanly before being sent to the hospital, then it is not necessary to use drugs to control the growth cycle. These drugs are sent to the table without being drained, and the crabs naturally carry a bitter flavor.

How to avoid bitter crabs

1, buy regular farming crabs

Buy regular farmers farming crabs, the best is to be able to see the breeding base of the kind of breeding bases, the breeding base of the lake, the quality of the water has to ensure that the normal cooking of such crabs will not be with a bitter taste.

2, try to net a few days

Buy back the crab do not know whether the regular breeding base breeding, this crab is best placed at home with water for a few days, during the period of attention to the diligent change of water, and so the crab will be the body of the harmful substances all out of the body and then consumed, there will be no bitter taste.

Reference Baidu Encyclopedia - Crab Roe