Natural peanut butter should be refrigerated

Does natural {peanut, cashew, almond butter} require cooling?

I don't think I've ever seen peanut butter mold grow, naturally or commercially, chilled or not. What will happen to natural peanut butter is that the fat (which is plentiful) will go rancid over time.

The oxidation process that leads to rancidity requires heat, light, and usually oxygen. Therefore, if you keep it in the refrigerator, the process will be slowed down considerably.

Manufacturers are likely not required to label nut butters with a "keep refrigerated" warning, as eating rancid foods will not technically kill you or make you seriously ill. When a product says to keep it refrigerated, sometimes it's for safety, sometimes it's just for quality - with peanut butter this is usually the latter.

Commercial peanut butter contains a ton of sugar and other preservatives, which is why refrigeration is not necessary for quality reasons.


Has commercial peanut butter often a ton of sugar .... mostly, but you can buy just grind peanuts as peanut butter at the store.


My main concern here was natural / raw nut butters as there are no preservatives and sugar in it. Still helpful information.


Maybe in the USA? But in many parts of the world, peanut butter is just made of ground peanuts, maybe some salt to taste, and maybe a little vegetable oil (often peanut) to help with less oily peanuts. Sugar in peanut butter ... why?