Look for mold or any off-colors. Butter tends to darken as it ages. Old butter may also appear to have a grainier texture.

But the more butter (and really, most foods) is exposed to elements like heat, light and oxygen, the more the fat inside breaks down, which is what makes it go bad. Colder temperatures, like in a ...

Whether you prefer natural or processed peanut butter, here are recommended storage times to maintain the best quality once ...

Meanwhile, for the home cook, butter molds serve as an easy way to jazz up a table. You just spread creamy softened butter (salted, unsalted, home-whipped with your own Maldon—whatever you ...

How to tell if peanut butter is has gone bad . Start with the good old sniff test before you taste it. If your peanut butter has gone bad, you’ll notice a metallic smell coming from the jar.

There is more bad news for butter-lovers. The new study, published on March 6th in JAMA Internal Medicine by authors in Massachusetts and Denmark, relied on data from three long-run trials of ...