How to Make Sour Milk – Buttermilk Substitute

cup of sour milkHow to Make Sour Milk

Sour milk is easy to make. Sour or Soured milk is milk that either has acid (vinegar or lemon juice) added to it or has gone sour and is now fermented milk. It would take sitting out overnight for it to ferment so instead this recipe uses an acid because who has a day or so to wait for it to ferment when you have a recipe to make?

Buttermilk Substitute

Sour milk can be used as a substitute for Buttermilk. While not exactly buttermilk (won’t taste exactly the same) it will have the acidity that a recipe may require especially for baking. Remember what happens when you combine baking soda with an acid?  (think science project volcano) Recipes with baking soda or baking powder that call for sour milk or buttermilk need the acidity to rise.

How to make 1 cup sour milk

To make exactly 1 cup of sour milk put 1 tablespoon of vinegar or  1 tablespoon of lemon juice in a measuring cup and fill it up with milk until you get to the 1 cup mark. Give it a stir. I recommend using whole milk or 2% milk and white vinegar. I’ve read heavy cream can be used but it’s expensive for one and would have more milk fat than a recipe was likely designed for.

Let the mixture sit for 5 minutes so it can become soured and it’s ready to use.

How to make 1/2 cup sour milk

Same process but use 1 1/2 tsp of vinegar or lemon juice and fill measuring cup with milk to 1/2 cup.

How to make 1/4 cup sour milk

Same process but use 3/4 tsp (1/2 tsp plus 1/4 tsp) of vinegar or lemon juice and fill measuring cup with milk to 1/4 cup.

How to make real homemade sour milk

This is how my grandma would make real sour milk.

Pour one cup of pasteurized milk or raw milk into a clean bowl, cup or glass and let it sit out overnight until it has gone sour. It will be thicker and have curdled bits in it.

No doubt this takes time but if you want real sour milk for baking this is they way to get it.


NOTE!

IF you need the milk to curdle slightly and be slightly thicken it should be room temperature or slightly warmed in the microwave on a low defrost setting. .  I’m not convinced this is needed for baking recipes.  Not being cold could throw a recipe off also. If I find otherwise I’ll update this post.

What can you make using sour milk?

  • Buttermilk pancakes
  • Buttermilk biscuits
  • Sugar Cookies (recipe coming soon!)
  • Breads

Still reading?  Want to know even more?  Check out Wikipedia.

Yum

How to Make Sour Milk - Buttermilk Substitute
 
Sour Milk - Buttermilk substitute Author: Shawn Prep time: 2 mins Cook time: 5 mins Total time: 7 mins Serves: 1 cup Need Sour Milk for a recipe?

It's easy to make and is often used as a substitute for Buttermilk. While not 100% exactly buttermilk it will be similar and will have the acidity that a recipe may require especially for baking. Remember what happens when you combine baking soda with an acid? (think science project volcano) Recipes with baking soda or baking powder that call for sour milk or buttermilk need the acidity to rise.
Ingredients
  • 1 tbsp white vinegar or lemon juice
  • 1 cup of milk ( just a little less, read instructions)
Instructions
  1. To make exactly 1 cup of sour milk put 1 tablespoon of vinegar OR 1 tablespoon of lemon juice in a measuring cup and fill it up with milk until you get to the 1 cup mark. Give it a stir.
  2. Let the mixture sit for 5 minutes so it can become soured and it's ready to use.
Notes
How to make ½ cup sour milk - Same process but use 1½ tsp of vinegar or lemon juice and fill measuring cup with milk to ½ cup.

How to make ¼ cup sour milk - Same process but use ¾ tsp (1/2 tsp plus ¼ tsp) of vinegar or lemon juice and fill measuring cup with milk to ¼ cup.

IF you need the milk to curdle/thicken it should be room temperature or slightly warmed in the microwave on a low defrost setting. I'm not convinced this is needed. Not being cold could throw a recipe off also. If I find otherwise I'll update this post.

How to make real homemade sour milk

This is how my grandma would make real sour milk.

Pour one cup of milk into a clean bowl, cup or glass and let it sit out overnight to sour. No doubt this takes time but if you want real sour milk for baking this is they way to get it.