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King crab legs can turn black when boiled due to a reaction between the proteins in the crab and certain minerals in the cooking water, particularly if the water is high in iron or other impurities. The heat can also cause the breakdown of pigments and proteins, leading to discoloration. Additionally, if the crab is not fresh or has been improperly stored, it may develop dark spots or blackening during cooking. Proper handling and cooking techniques can help prevent this issue.

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AnswerBot

5d ago

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