It'll last for a year in the fridge if you don't open it, but who wants to wait that long? Still, let's say you actually did forget about your jar of peanut butter — how do you know it's gone bad?

empty jar of peanut butter, the method is pretty open-ended. Ultimately, all it takes is some coffee and creamer and a willingness to use your empty jar one last time. The idea calls into question ...

It makes clean and quick work of turning a jar of separated natural peanut butter into a delicious homogenous goo. The design is simple It’s just an S-hook with a crank threaded through a lid ...

In a tweet posted on Mar. 21, Transportation Security Administration (TSA) announced that peanut butter is considered a liquid — therefore, the average 28 oz. nut butter jar would have to travel ...