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Cream Of Tartar substitutes

Out of cream of tartar? Here are the best substitutes — what to reach for, why it works, and how much to use. Lemon juice is the top pick.

  1. 01
    Lemon juicebest pick

    The acid is what stabilizes whipped egg whites — juice does the same job.

    1/2 tsp cream of tartar = 1 tsp lemon juice

  2. 02
    White vinegar

    Same acid function, more neutral flavor.

    1/2 tsp = 1 tsp vinegar

  3. 03
    Baking powder

    Already contains cream of tartar plus soda — swap out both leaveners together.

    1 tsp baking powder = 1/4 tsp soda + 1/2 tsp cream of tartar

  4. 04
    Buttermilk

    Acidic enough to activate baking soda in batters; reduce other liquid.

    replace liquid 1:1

Cooking with cream of tartar?

Paste your recipe into Mise — we'll find every ingredient as a real product you can buy, and swap the ones you can't, like cream of tartar, for the closest match in stock.

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How we choose these

These are tested kitchen substitutes, chosen for matching flavor, texture, and role — with ratios so the swap actually works. Taste as you go; substitutes shift intensity, not just flavor.

Flavor data: Epicure (Radzikowski & Chen, 2026), arXiv:2605.22391, CC-BY-4.0.
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