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How to Make Homemade Buttermilk

If you’ve ever started baking and realized you don’t have buttermilk in the fridge, don’t worry — you can make a quick homemade substitute in just minutes.

This simple homemade buttermilk trick is perfect for pancakes, biscuits, cakes, cornbread, and so many other cozy recipes. All you need is milk and a little lemon juice.

It’s one of those kitchen shortcuts that saves a trip to the store and works beautifully every time.

Why Use Lemon Juice in Homemade Buttermilk?

Lemon juice adds the perfect tang and acidity that buttermilk is known for. When mixed with milk, it slightly thickens and creates a curdled texture that mimics real buttermilk in baking.

This acidity also helps activate baking soda, giving baked goods a soft, fluffy rise.

Jennie’s Thoughts

This little homemade buttermilk trick has honestly saved me more times than I can count. I can’t tell you how many times I’ve been halfway into making pancakes or a cozy quick bread and realized… I forgot to buy buttermilk.

Now I almost never worry about it, because lemon juice and milk are usually already in my kitchen.

I love using lemon juice because it gives that perfect tang and makes baked recipes come out so soft and tender, just like the real thing. It’s one of those simple old-fashioned kitchen hacks that feels so comforting and practical.

If you love baking at home, this is definitely one of those recipes to keep in your back pocket — quick, easy, and always dependable when you need it most.

Ingredients You’ll Need

To make homemade buttermilk with lemon juice, you only need:

• 1 cup milk (whole milk works best)
• 1 tablespoon fresh lemon juice

That’s it!

How to Make Homemade Buttermilk with Lemon Juice

Step 1: Add Milk to a Measuring Cup

Pour 1 cup of milk into a liquid measuring cup or small bowl.

Step 2: Stir in Lemon Juice

Add 1 tablespoon of lemon juice to the milk and stir gently.

Step 3: Let It Sit

Let the mixture sit for 5–10 minutes at room temperature.

It will begin to thicken slightly and look a little curdled — that means it’s ready.

Step 4: Use Immediately

Once thickened, use your homemade buttermilk right away in your recipe.

Homemade Buttermilk Ratio (Lemon Juice Version)

The basic formula is:

• 1 cup milk + 1 tablespoon lemon juice

To scale up:

• ½ cup milk + ½ tablespoon lemon juice
• 2 cups milk + 2 tablespoons lemon juice

Best Recipes to Use Homemade Buttermilk In

This lemon juice buttermilk substitute works best in:

• pancakes and waffles
• biscuits
• muffins
• cakes
• cornbread
• quick breads

It’s a perfect baking staple when you need buttermilk fast.

Tips for Success

• Whole milk gives the closest texture, but any milk works
• Let it sit the full 10 minutes for best results
• Use fresh lemon juice for the best flavor
• Make only what you need — it’s best used right away

Final Thoughts

Homemade buttermilk with lemon juice is one of the easiest kitchen hacks and a total lifesaver for baking. With just two ingredients, you can make a quick substitute that gives your pancakes, biscuits, and cakes that soft, tender texture we all love.

The next time you’re out of buttermilk, you’ll have this simple trick ready to go!