It will spoil/go rancid. Even the 'non-natural' big brands like Jif/Skippy taste and smell 'off' if they sit out for a few weeks after being opened.
There's no winning here, because putting it in the fridge makes it hard to spread. The best approach is to take out a week's worth or so and put it in a small/airtight container. Leave that out but put the main jar in the fridge.
I've been buying 100% peanut butter for years, never stored it in a fridge and never had it go bad. Maybe your room temperature is higher? It's strange as with a single ingredient product I would expect we would have the same results...
The separation and mixing is a pain though. Love the mixer idea!
Same here. Never even thought of the fridge or what cold peanut butter would be like. I just can’t imagine it and have never needed to. Weird. In other contexts too I’ve never experienced it. Work breakfasts, hotels, I really can’t ever recall fridge temperature peanut butter. Not to mention the size pots we buy would be annoying.
My solution is to have 3 kids. Peanut butter has no chance of spoiling around here, we go through it like it’s going out of fashion! On a more serious note perhaps simply buy a smaller jar if it spoils before you eat it all.
Funny I’ve been leaving it out in the pantry for years. It just switched to the fridge only because I find it too runny at room temp. My son dribbles it everywhere trying to make pb&js.
There's no winning here, because putting it in the fridge makes it hard to spread. The best approach is to take out a week's worth or so and put it in a small/airtight container. Leave that out but put the main jar in the fridge.