It might be difficult to tell when this naturally tangy milk is past its prime.

Just like all dairy products purchased from the grocery store, buttermilk has a shelf-life.

We reached out to an expert for advice and storage tips.

Herbed Buttermilk Ranch Dressing

Credit:Alison Miksch

Historically and traditionally, buttermilk was the liquid left after churning cream into butter.

This liquid was left to ferment in root cellars, which made it tangy and thick.

How Long Does Buttermilk Last?

Herbed Buttermilk Ranch Dressing

Credit: Alison Miksch

Buttermilk should always be stored in a refrigerator at or below 40 degrees Fahrenheit.

Can You Freeze Buttermilk?

If your buttermilk looks like it’s about to go bad, it can be frozen.

What Can You Substitute For Buttermilk?

Vickers says this has happened to her, too, and theres an easy solution.