Even cooked kidneys have small amounts of the poison though... So there is at least a logical reason why kidney beans in particular might not agree with you. I don't care for them very much myself, but I think that might have more to do with cafeteria red-beans-and-rice as a small child.
I made a list in another response, but I'll repeat it here for your benefit. Phytohaemagglutinin is present in most beans, but kidney, cannellini (white kidney), fava, and broad beans, and some varieties of green beans, have much higher levels. They should be safe if they're boiled for long enough (10 minutes), but even that doesn't completely remove all of the toxin.
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I got them from a can, but I wonder about the can.
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Even cooked kidneys have small amounts of the poison though... So there is at least a logical reason why kidney beans in particular might not agree with you. I don't care for them very much myself, but I think that might have more to do with cafeteria red-beans-and-rice as a small child.
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Maybe you just have a tender tummy.
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