Can Butter Go Moldy? Easily Explained

When can butter go moldy?

Many foods quickly become moldy if they are stored incorrectly or for too long. This is not the case with butter:

• Butter consists largely of fat. This fat does not contain any substances on which mold can form. That’s why it’s very unlikely that butter just goes moldy.
• However, butter can still spoil by going rancid. You can recognize this with an unpleasant odor and a dark color. In this case, you should stop eating the butter.
• Also note: Of course, bread and butter can still become moldy, since mold can form on the bread.