Eli5: why does “good” peanut butter need to be refrigerated?

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The only ingredients on the label are “peanuts, salt.”

We keep peanuts unrefrigerated in the pantry… we keep salt unrefrigerated in the pantry… so how come when you mash them together it makes something that (according to the jar) must be refrigerated after opening?

P.S. I put “good” in quotes because all peanut butter is good. What I mean by “good” peanut butter is the healthier stuff that you have to mix the oil back into and there are only the above mentioned ingredients.

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Anonymous 0 Comments

I’ve never refridgerated peanut butter?? I’ve been eating it most days for at least 45 years and it wouldn’t even occur to me to refridgerate… Having said that I eat ‘Sun Pat’ here in the UK and it does not contain palm oil so maybe that’s it. I wouldnt go near any of the palm oil ones with a barge pole. That stuff is dangerous..

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