How to Make Buttermilk

You’re about to start a recipe and realize you don’t have one of the key ingredients—buttermilk! Don’t you worry, we’ve got the solution. Keep reading for all of our buttermilk substitutes!

Don’t have buttermilk? make it!

There are a lot of recipes that call for buttermilk. Biscuits, buttermilk pancakes, buttermilk syrup

Sometimes I want to make these recipes but I don’t have any buttermilk in my fridge. That’s where these simple buttermilk substitute recipes come in and save the day! So instead of having to run to the store, just use one of these subs instead.

What is the difference between milk and buttermilk: First off, buttermilk is NOT milk that has gone bad. If you have sour smelling milk, toss it out. Buttermilk is milk combined with lactic acid. The acid reacts to the baking ingredients and produces a tangy taste along with a lighter fluffy texture.  

What is a Substitute for Buttermilk?

There are a few substitutes for buttermilk that you can use, or you can even make your own buttermilk. Both are great options!

Always use a 1:1 ratio substitute. so if the recipe calls for ½ c buttermilk, then use ½ c milk substitute.

Need 2 cups buttermilk? Use 2 cups of the substitute.

You get the idea. 😉

How to Make Buttermilk

There are many ways to make buttermilk. Our go-to recipe usually is with milk and lemon juice. But today, we are not only sharing this recipe, but as well as several others you can use as well.

Substitution options

If you need to make 1 cup of buttermilk substitute you’ll need:

  • 1 cup of milk
  • Add 1 tbsp of white vinegar OR lemon juice OR cream of tartar. Do not add all three. Only choose one to mix with the milk (we typically use lemon juice)
  • Stir and let it sit for 5 minutes

It’s that easy. After it has set for 5 minutes, you’re ready to use it in any recipe that calls for buttermilk.

Buttermilk Substitute Yogurt

Another substitute can be made with yogurt. Here is what you’ll need:

  •  ¾ cup plain yogurt 
  • ¼ cup milk
  • Mix and sit for 5 minutes

Note: always allow the mixture to rest for 5 minutes so allow it so combine and curdle a bit. 

Sour Cream + Kefir Substitute

Another one? Whisk together sour cream and milk (or even water).

  •  2/3 cup sour cream
  • ⅓ cup milk
  • Mix and sit for 5 minutes

This hack is particular good in coffee cakes and pancakes.

KEFIR: No tinkering needed for this one: substitute equal parts kefir for buttermilk in any recipe—just make sure it’s unsweetened, unflavored kefir.

Storing Info

Store: Store buttermilk in an airtight container like a mason jar in the fridge for 1-2 weeks

Can you freeze buttermilk substitute? You can freeze buttermilk and the buttermilk substitute. Hopefully, between the two you’ll always have some on hand. I suggest using an ice cube tray. Measure 1 tbsp of buttermilk for each slot in the tray. Freeze. Once frozen, transfer the cubes to a freezer Ziploc. Label and keep frozen for up to 3 months. 

Recipes using Buttermilk:


Buttermilk Substitute Recipe

5 from 7 votes
When you need buttermilk for recipe but don't have any on hand, you can quickly make your own as a substitute!
Cuisine American
Prep Time 6 minutes
Total Time 6 minutes
Servings 1 cup
Calories 152 kcal
Author Lil' Luna


  • 1 cup milk
  • 1 tbsp lemon juice


  • Stir ingredients together until combined.
  • Let sit for 5 minutes before using in a recipe.


If you don't have lemon juice, you can also use the same amount (1 tbsp for every cup of milk) of white vinegar OR cream of tartar.
You can store your buttermilk substitute in the fridge in an airtight container, such as a mason jar, for 1-2 weeks.

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About the Author

Kristyn Merkley

My name is Kristyn and I’m the mom of SIX stinkin’ cute kids and the wife to my smokin’ hot hubby, Lo. My mom’s maiden name is Luna, and I’m one of the many crafty “Lil’ Lunas” in the fam. On this site I like to share all things creative - from recipes to home decor to gifts and home decor ideas. Welcome!

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  1. 5 stars
    I have never made my own & hate when a recipe calls for buttermilk, but I am out. This will come in so handy!! Thanks!

  2. 5 stars
    this is wonderful because recipes never usually call for that much buttermilk so i end up wasting my store-brought ones. i will just make my own now!

  3. 5 stars
    I have never thought to make my own buttermilk. Thanks for the idea. It will save me a trip to the store one of these days for sure.

  4. 5 stars
    I didn’t know you could use lemon juice, i always just use vinegar. You would think i would keep regular buttermilk on hand as often as I use it!

  5. 5 stars
    I love the convienence of using Regular items when you Dont have buttermilk in your fridge. There really is no difference. So nice to know!

  6. 5 stars
    Need buttermilk, this helps to know how to make my own!! Have plain Yogurt, did not know what to do with it, now I know one thing!! Have anymore, how to use plain yogurt?? Would love to here them!!

    1. Oh I’m glad this was helpful! Yes, a few ideas are to fluff up waffles, use it in a warm soup (similar to a sour cream substitute), use it as a veggie dip (add some other spices or a packet of dry onion soup mix), make frozen yogurt pops or drops, use it in smoothies, etc. There are lots of ideas on the internet too!

    1. Yep! That’s typically what I use…. milk and lemon juice. But there are a few options listed in the post to make your own buttermilk.