You can make a simple, effective baking powder substitute at home with just two or three pantry ingredients.

What baking powder actually is

Baking powder is a leavening blend that releases gas so cakes, muffins, and pancakes rise.

Most homemade versions use:

  • Baking soda (the base)
  • Cream of tartar (the acid)
  • Optional: cornstarch or arrowroot (keeps it dry and free‑flowing)

The classic ratio is:

  • 1 part baking soda
  • 2 parts cream of tartar
  • 1 part cornstarch (optional)

Basic homemade baking powder recipe

Small batch (about 1 tablespoon)

This is perfect when you just ran out mid‑recipe.

  • 1 teaspoon baking soda
  • 2 teaspoons cream of tartar
  • 1 teaspoon cornstarch or arrowroot (optional for storage)

Steps

  1. Add baking soda, cream of tartar, and (if using) cornstarch to a small dry bowl.
  1. Mix thoroughly, breaking any lumps with the back of a spoon or a small whisk.
  1. Use immediately in your recipe, measuring it just like store‑bought baking powder (1:1).

If you are using it right away and not storing it, you can skip the cornstarch.

Larger batch for your pantry

If you bake often, you can mix a jar so it’s always ready.

Example larger batch

  • 4 tablespoons baking soda
  • ½ cup cream of tartar
  • 4 tablespoons cornstarch or arrowroot

This yields about 1 cup of homemade baking powder.

Steps

  1. Combine all ingredients in a clean, very dry mixing bowl.
  2. Whisk until the powder looks uniform and fine, with no visible streaks.
  3. Using a funnel, transfer to an airtight jar or container with a tight‑fitting lid.
  1. Label it “Baking Powder – aluminum‑free, homemade” and add the date.

Store in a cool, dry cupboard away from steam, like with your spices.

How to use it in recipes

  • Use it in the same amount as commercial baking powder for most standard recipes (teaspoon for teaspoon).
  • This homemade mix is usually single‑acting : it reacts mainly when mixed with liquid, then loses strength as it sits.
* That means:
  * Mix your batter quickly.
  * Bake right away (don’t let it sit on the counter for long).

If a recipe absolutely depends on commercial double‑acting baking powder (for example, some tall sponge cakes), your homemade version will still work, but the rise might be slightly less dramatic.

Quick no‑cornstarch version (use immediately)

If you don’t plan to store it, you can simplify:

  • 1 teaspoon baking soda
  • 2 teaspoons cream of tartar

Mix well and add directly to your dry ingredients. Use right away so the reaction happens in the oven, not in the bowl.

How to check if your homemade baking powder is still good

Because this mix can lose potency over time, it’s smart to test it if it has been sitting for a while.

  1. Add ½ teaspoon of your homemade baking powder to a small cup.
  2. Pour in a few tablespoons of warm water.
  3. If it fizzes actively right away, it’s good; if it barely bubbles, make a fresh batch (and make smaller amounts so you use it within a month or so).

Mini FAQ and extra tips

  • Can I make it without cream of tartar?
    Not a true baking powder; you’d need another dry, acidic ingredient, and results are less predictable. Most reliable DIY recipes specifically use cream of tartar.
  • Why add cornstarch or arrowroot?
    It absorbs moisture in the air, keeps the mixture from clumping, and helps prevent the acid and base from reacting too early while it’s in the jar.
  • Is homemade baking powder aluminum‑free?
    Yes, if you use only baking soda, cream of tartar, and (optionally) starch, your mix will be aluminum‑free.
  • How long does it last?
    Many home bakers prefer to make just enough to use within about a month for best rising power.

Quick HTML table for your post

Here’s an HTML table version of the key recipe for your “Quick Scoop” section:

html

<table>
  <thead>
    <tr>
      <th>Batch Size</th>
      <th>Ingredients</th>
      <th>Notes</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Small (1 Tbsp)</td>
      <td>
        1 tsp baking soda<br>
        2 tsp cream of tartar<br>
        1 tsp cornstarch or arrowroot (optional)[web:1][web:3]
      </td>
      <td>Use 1:1 like store-bought baking powder; best used within a month.[web:1][web:3]</td>
    </tr>
    <tr>
      <td>Large (~1 cup)</td>
      <td>
        4 Tbsp baking soda<br>
        1/2 cup cream of tartar<br>
        4 Tbsp cornstarch or arrowroot[web:1]
      </td>
      <td>Store in airtight jar, cool and dry place.[web:1]</td>
    </tr>
    <tr>
      <td>Instant (no storage)</td>
      <td>
        1 tsp baking soda<br>
        2 tsp cream of tartar[web:3][web:9]
      </td>
      <td>Skip starch and use immediately in the recipe.[web:3][web:9]</td>
    </tr>
  </tbody>
</table>

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Learn how to make baking powder at home using simple ingredients like baking soda and cream of tartar, with easy ratios, storage tips, and testing tricks for reliable rising every time.

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