TIL closed-cup white mushrooms, common in supermarkets, are all descended from one mutant Agaricus Bisporus (usually brown) mushroom found in 1925.

Read more: https://en.wikipedia.org/wiki/Agaricus_bisporus#Cultivation_history

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  1. Make sure you cook them well done.

    They don’t digest eaten raw.

    Button mushrooms have a carcinogen that only breaks down under high heat.

    Best to just stay away.

    Get your mushrooms from an Asian market.

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