A versatile ingredient, buttermilk adds a distinctive tang to everything from salad dressing to home-baked bread to fried chicken. Making your own is surprisingly easy, and there are two different methods. What you have on hand and when you need your buttermilk will determine which method you use, but both yield results that you can use 1:1 in any recipe that calls for buttermilk.
How to Make Buttermilk: The 10-Minute Way
When to use this method: When you need buttermilk immediately.
What you'll need: Whole or 2-percent milk and fresh lemon juice or white distilled vinegar.
Why it works: Buttermilk brings its tangy flavour and acidic makeup to recipes, important in baking when you're using baking soda as a raising agent, which needs acid to activate it. Here, you're creating an acidic dairy mixture. Although it's not cultured, it'll work like buttermilk in recipes.
Step one: Prepare your milk. Pour 1 cup of whole or 2% milk into a liquid measuring cup. For vegan buttermilk, you can use a vegan milk of your choice with perfect results.
Step two: Add an acid. For every 1 cup of milk, stir in 1 tablespoon lemon juice or vinegar. Let the mixture stand for 10 minutes. You can scale the recipe up or down depending on how much you need.
Step three: Ready to use. The acid will curdle the milk slightly.
How to Make Cultured Buttermilk
When to use this method: You have time (a full day), you want to create full-flavoured buttermilk that tastes like that you buy from the store for much less money.
What you'll need: 1/2 cup of cultured buttermilk and 1 quart whole milk, 2% milk or 1% milk.
Why it works: The culturing method is how buttermilk is made commercially, so it’s the method that’s going to give you the most natural flavor, consistency and the lactic acid that is the byproduct of the bacteria turning the milk into buttermilk.
Step one: Prepare your cultured buttermilk. Pour 1/2 cup of the cultured buttermilk into the bottom of a lidded container that'll hold 6 cups. (A standard Mason jar will do, or use any non-reactive container with a lid.)
Step two: Stir to combine. Pour in 1 quart of milk. Stir to combine the milk and buttermilk thoroughly.
Step three: Leave at room temperature. Place the lid on your container. Leave it out on the counter at ambient room temperature.
Step four: Wait 12 to 24 hours. After 12 to 24 hours, the mixture will thicken. The longer you leave it out, the thicker and tangier the buttermilk will be. Depending on how warm your kitchen is, it may also take longer. Once the buttermilk has reached the texture and flavor you desire, store it in the refrigerator for up to a month. When you are down about half a cup, you may repeat the process by adding your homemade buttermilk to fresh milk.
