A butter expert weighs in.

Plus 2 tricks for keeping butter fresher for longer.

Does butter go bad?

Butter sliced

Simply Recipes / Photo Illustration By Wanda Abraham / Getty Images

And if it does, how can you tell?

Here’s what I found out.

Simply Recipes / Alison Conklin

Does Butter Go Bad?

Best Lemon Curd Recipe Adding the Butter

Simply Recipes / Alison Conklin

Unfortunately, butter does eventually go bad.

Your butter will indeed begin to decrease in quality after the best-by date.

The rep noted that it usually indicates the fats are beginning to turn rancid.

Butter on a roll

Simply Recipes / Ciara Kehoe

Simply Recipes / Andy Christensen

2 Tricks for Keeping Butter Fresher for Longer

1.

Unsalted butter stick and plate of cubed butter

Simply Recipes / Andy Christensen