Tips On How to Freeze Buttermilk

frozen buttermilk in ice tray
Photo © Erin Huffstetler

Tired of buying buttermilk for a recipe only to have the rest of the carton go bad before you figure out what to do with it? Freeze your leftovers, and they'll be there the next time you need them.

Just pour your extra buttermilk into an ice cube tray; pop it in the freezer; and transfer the cubes to a freezer bag once they're frozen. It's that easy.

Here are some conversions to help you figure out how many cubes to add to a recipe:

2 cubes = 1/4 cup (4 Tbsp)
4 cubes = 1/2 cup (8 Tbsp)
6 cubes = 3/4 cup (12 Tbsp)
8 cubes =1 cup (16 Tbsp)

*These are approximation based on the typical ice cube tray, which makes 1-ounce cubes. Measure yours, if you want precise measurements.

For bigger cubes, consider investing in ice cube trays that make 2-inch cubes. This will give you cubes that are one-half cup each. It's a handy size for freezing buttermilk, as well as leftover wine and broth.

Buy 2-Inch Ice Cube Trays on Amazon

Plan Ahead

If you already know what you're going to use the buttermilk for, go ahead and measure out the amount that you'll need before you freeze it. Pour individual servings into freezer bags. Label the bags (include how much buttermilk you put in each one). Then, arrange them on a cookie sheet, and freeze the whole tray. This will give you flat bags that are easy to stack, and take up minimal space in the freezer.

To Use Frozen Buttermilk

Thaw your cubes or freezer bags of frozen buttermilk in the fridge overnight, or add them directly to hot dishes.

If you don't have time to wait for them to thaw, you can also defrost them in the microwave. Just go slowly; you don't want to cause your milk to curdle or burn.

Each cube is equal to two tablespoons of buttermilk.

Freezing will cause the whey to separate from the milk fats. Just stir the buttermilk vigorously, or give it a quick whirl in the blender to bring everything back together.

More Options for Leftover Buttermilk

If you're not sold on the idea of freezing buttermilk, there are plenty of recipes that you can put leftover buttermilk to work in. Here's the scoop on how long you have to use up your buttermilk.

Avoid Future Leftovers

Use a buttermilk substitute in place or real buttermilk, or switch to powdered buttermilk, so you can make just what you need.

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