Cream of Tartar Substitute: What Works Best?

Yes—there are substitutes for cream of tartar, but the right one depends on what it does in the recipe. Lemon juice or white vinegar can provide acidity, while baking powder can replace cream of tartar and baking soda when they are used together as a leavener; neither option is suitable for every job.

What cream of tartar does

Cream of tartar is the common name for potassium bitartrate, an acidic powder that forms as a by-product of winemaking. It is not a cream or a dairy product. Because it is dry, concentrated, and shelf-stable, a small quantity can contribute acidity without adding much liquid or changing a mixture’s texture substantially.

Recipes use it for several different reasons. It can react with baking soda to produce carbon dioxide and help baked goods rise. In whipped egg whites, a little acid helps the foam become more stable. In syrups and some candies, acidity can limit the formation of large sugar crystals. It can also supply the characteristic slight tang in foods such as snickerdoodles.

Those jobs are not interchangeable. A substitute that supplies acid may work in egg whites or a batter, but it will not necessarily replace the lifting action of a carefully balanced baking soda-and-acid combination. Start by identifying why the recipe calls for cream of tartar rather than choosing a replacement by name alone.

Choose a substitute by the recipe’s purpose

Before measuring anything, check the ingredient list and method. If baking soda appears alongside cream of tartar, the two are probably intended to react. If cream of tartar is added to egg whites, the aim is usually a more stable foam. If it appears in a candy or syrup recipe, it is there to affect sugar crystallization. These distinctions determine whether you should substitute, adjust another ingredient, or simply leave it out.

For baking soda plus cream of tartar: use baking powder to replace the pair, following the conversion below.
For whipped egg whites: use lemon juice or white vinegar in a small amount.
For a small amount in a batter or dough: an acidic liquid may work, but account for the extra liquid and flavor.
For candy or syrup: use a tested recipe-specific alternative; a general swap may change the result.

When baking soda and cream of tartar are together

Baking soda is alkaline and needs an acid to react fully in a recipe. If a recipe includes both baking soda and cream of tartar, baking powder is often the simplest substitute because it contains baking soda and one or more dry acids. A common conversion is to replace 1/2 teaspoon (about 1.5 g) cream of tartar plus 1/4 teaspoon (about 1.2 g) baking soda with 1 teaspoon (about 4 g) baking powder.

For example, a snickerdoodle recipe using 2 teaspoons (about 6 g) cream of tartar and 1 teaspoon (about 5 g) baking soda can often be adapted with 4 teaspoons (about 16 g) baking powder in place of both. The cookies may have less of the familiar tart flavor and a somewhat different spread or texture, so this is a practical adjustment rather than a guarantee of an identical cookie. Do not add baking powder while keeping the original full amounts of both leaveners unless the recipe specifically directs it; too much leavening can affect flavor and structure.

If the recipe calls for cream of tartar but no baking soda, baking powder is not automatically an equivalent. It adds leavening ingredients, including alkaline baking soda, and can change how the batter rises and tastes. In that situation, first consider whether the cream of tartar is serving a stabilizing or flavor role instead.

For stabilizing whipped egg whites

Cream of tartar is commonly used when beating egg whites for meringue, soufflé, or other foams. Its acidity helps the foam hold its structure, though it does not make egg whites impossible to overbeat. If it is unavailable, lemon juice or white vinegar can supply acid without requiring a major change to the method.

A practical starting point is 1/2 teaspoon (2.5 ml) lemon juice or white vinegar for each egg white, instead of 1/8 teaspoon (about 0.4 g) cream of tartar per white. Add the liquid once the whites are foamy, then continue beating as directed by the recipe. The substitute can add a faint citrus or vinegar note, though that is usually subtle at this amount. Lemon juice may contribute a little more flavor than plain white vinegar.

Acid supports the foam; it does not replace clean equipment, careful separation, or the recipe’s beating technique. Even a small amount of yolk or grease can interfere with whipping. If making a preparation that will remain uncooked or only lightly cooked, use pasteurized eggs and follow food-safety guidance for the particular dish.

For cakes, cookies, and quick breads

When cream of tartar is a minor acidic ingredient in a batter or dough, lemon juice or white vinegar may work. A frequently used starting point is 2 teaspoons (10 ml) of lemon juice or vinegar for each 1 teaspoon (about 3 g) of cream of tartar. This is not a universal baking conversion: the added liquid can make a dough softer or a batter thinner, and the substitute’s acidity can differ from the original ingredient.

Consider the other liquids in the recipe. In a loose cake batter, an extra teaspoon or two may have little noticeable effect; in a firm cookie dough, the same amount can affect handling and spread. If practical, reduce another liquid by the amount of juice or vinegar added, but do not remove liquid from a recipe that depends on it for hydration without considering the texture. For a recipe where precision matters, a version written for the ingredients you have is more dependable than an improvised swap.

Flavor is another consideration. Vinegar can taste sharper than lemon juice, while lemon may give a light citrus note. In strongly flavored recipes, either may go unnoticed; in a delicately flavored cookie or cake, the difference can be more apparent. Baking powder is usually the better choice only when replacing a matching baking soda-and-cream-of-tartar pair.

For sugar syrups and candy

In some candy recipes, cream of tartar helps reduce unwanted sugar crystallization by changing some of the sucrose as the syrup cooks. Lemon juice or vinegar can also provide acid, but they are liquids with variable acidity and may contribute their own flavor. A generic spoon-for-spoon conversion is therefore less dependable here than in a small amount of ordinary cake batter.

Follow a recipe that specifically uses the substitute you have, especially for candies where temperature and concentration determine whether the result is smooth, chewy, or brittle. If you are adapting a recipe, changing the acid, cooking temperature, or cooking time at the same time makes it difficult to know which change affected the outcome. Some recipes can be made without cream of tartar, but the finished syrup may be more prone to crystallizing; that is not always a problem if the recipe does not require a clear, smooth syrup.

When you can leave it out—and common mistakes

Not every recipe will fail without cream of tartar. If it is included in a very small amount mainly for tang, leaving it out may produce an acceptable result with slightly different flavor. If it is the only acid reacting with baking soda, however, omission can leave the soda without enough acid and may affect rise and taste. Check the rest of the ingredient list before deciding.

Do not swap baking powder for cream of tartar alone unless the recipe’s leavening balance has been adjusted. Baking powder is a complete leavener, not a pure acid.
Do not treat lemon juice and vinegar as dry, flavorless powders. Their liquid and taste can matter, particularly in doughs and delicate desserts.
Do not assume more acid is better. Excess acid can affect flavor and the way a batter sets.
Do not expect every replacement to preserve the original texture. A foam, cookie, and candy syrup respond to ingredients in different ways.

Alum is sometimes mentioned as a substitute, but it is not a good general-purpose choice. Its flavor can be unpleasant, and most home cooks will get more predictable results by choosing an appropriate food-grade acid or using a recipe designed for baking powder.

Storage and practical buying advice

Cream of tartar is inexpensive in many grocery stores and is often sold with baking ingredients or spices. If a recipe relies on its specific effect—especially a meringue or candy recipe—buying a small container may be simpler than trying to adapt the formula. Check the label and keep the powder tightly closed in a cool, dry cupboard to protect it from moisture and odors.

It generally keeps well when stored dry, but age and poor storage can make any baking ingredient less dependable. If a leavener-based recipe is not rising as expected, check the freshness of the baking soda or baking powder too; cream of tartar alone cannot compensate for an inactive leavener. For an occasional recipe, a suitable substitute is reasonable, but for repeated use the original ingredient offers the most consistent result.

Frequently Asked Questions

Can I use lemon juice instead of cream of tartar? Yes, when the recipe needs acid, particularly for stabilizing whipped egg whites or in some batters. It adds liquid and may contribute lemon flavor, so it is not a direct replacement for every use.

Can I use baking powder instead of cream of tartar? Use it when replacing cream of tartar and baking soda together, not usually when cream of tartar is the only ingredient being replaced. A common guide is 1 teaspoon (about 4 g) baking powder for 1/2 teaspoon (about 1.5 g) cream of tartar plus 1/4 teaspoon (about 1.2 g) baking soda.

What is the best substitute for cream of tartar in meringue? Lemon juice or white vinegar is a practical option. As a starting measure, use 1/2 teaspoon (2.5 ml) per egg white in place of 1/8 teaspoon (about 0.4 g) cream of tartar.

Can I make snickerdoodles without cream of tartar? Often, yes. If the recipe also includes baking soda, replace the pair with an appropriate amount of baking powder; the cookies may lose some tang and their texture may change. A recipe developed for baking powder is the most predictable alternative.

Can cream of tartar be omitted from a recipe? Sometimes, especially when a small quantity contributes mainly flavor. Do not omit it casually when it is the only acid paired with baking soda or when a candy recipe depends on controlling sugar crystals.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).