Cream of Tartar

Baking Basicsstaple

Acidic white powder used to stabilize egg whites, prevent sugar crystallization, and activate baking soda.

Also Called

tartaric acidcream tartar
Reviewed by the CupOrGram Editorial TeamSources: King Arthur Baking, USDA FoodData Central, in-house testingMethodology

Properties

Density Index
0.69 g/cm3
1 Cup Weight
162g
Texture
Powder
Category
Baking
Top Substitute

Lemon Juice

Use 2 teaspoons lemon juice per 1 teaspoon cream of tartar

Works for acidity, but adds liquid and flavor.

Most-used links for Cream of Tartar

Conversions

cupsgrams
1/4 cups41.0 grams
1/3 cups53.0 grams
1/2 cups81.0 grams
1 cups162 grams
1.50 cups243 grams
2 cups324 grams
3 cups486 grams
4 cups648 grams
Figures use the US cup (236.6 ml).
Density: 0.69 g/ml
Quick Convert

Ingredient-specific, density-based conversions for baking

1 cups of Cream of Tartar equals 163 grams
Ingredient-specific · density-based
Cup size

Recommended Tools & Pantry Picks for Cream of Tartar

Optional shopping references for bakers who want to compare tools and pantry options related to cream of tartar.

Digital Kitchen Scale

Essential for cup-to-gram accuracy and repeatable bakes.

Shop scales

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Substitutions for Cream of Tartar

Storage Tips

Store airtight in a cool, dry place. Replace if clumped or stale.

Baking Science

Cream of tartar is potassium bitartrate. Its acidity strengthens whipped egg white foams and balances alkaline baking soda in cookies and cakes.

Recipe Context

For chemical leavening: small weight changes alter rise and browning.

For quick breads: over-leavening can cause collapse after oven spring.

For cookies: balance leavening with acid source for predictable spread.

Common Pitfalls

  • Switching brands without re-checking weight can change texture and bake time.
  • Using volume-only measurements for dense ingredients can overshoot recipe targets.
  • Expired leaveners can underperform even when measured correctly.

Brand Variance & Measuring Method

Baseline reference: 1 cup cream of tartar = 162g. In real kitchens, a practical range is usually 152g-172g per cup (6% band).

Why this happens: fine powders and leaveners settle during storage, changing cup density.

Figures use the US cup (236.6 ml).

Common Questions

How many grams is 1 cup of cream of tartar?

1 cup of cream of tartar weighs 162 grams.

What can I substitute for cream of tartar?

Lemon Juice (2 teaspoons lemon juice per 1 teaspoon cream of tartar), Baking Powder (Use 1 1/2 teaspoons baking powder for 1 teaspoon cream of tartar plus 1/2 teaspoon baking soda)

Explore Cream of Tartar Further

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