Tired of throwing out leftover buttermilk?

They use it all the time.

Are you one of the people who doesnt?

Bottles of Buttermilk Floating Around With Yellow and Green Dotted Illustrations in the Background

Simply Recipes / Photo Illustration by Wanda Abraham / Getty Images

Its something my mom taught me, and now Im going to tell you.

Mom Knows Best

Powdered buttermilk was a fixture at our house when I was growing up.

I was in my twenties before I saw refrigerated liquid buttermilk.

Opened Canister of The Saco Pantry: Cultured Buttermilk Blend on a Table With a Spoonful and a Red and White Checkered Kitchen Towel Next to It

Simply Recipes / Sara Bir

That carton wasSaco Cultured Buttermilk Blend.

She still uses it to this day and she keeps it in the freezer so itll stay fresh.

Im not sure if thats necessary, but it doesnt hurt.

Its easier than going through the trouble of mixing up the buttermilk separately.

Youll find Saco powdered buttermilk in the baking aisle near the powdered milk.

Most well-stocked mainstream grocery stores carry it.

A carton keeps for nearly 4 years!