Coconut - survival food!
 

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Have you ever gotten diarrhea from eating the spongy stuff?

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I consumed my share of coconut meat/milk in Panama when travelling in the interior. Never tried "U", the locals didn't (appear to) eat it. Yes - the milk will give people not accustomed to it diarrhea. (Saw a fair amount of it among Gringos overindulging their first time.) Use it sparingly in a survival sutuation until your body gets adjusted to it.

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