Soy Milk

Dairy & Fats

Plant milk made from soaked, ground, and strained soybeans. Highest protein of the major plant milks.

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

Properties

Density Index
1.03 g/cm3
1 Cup Weight
245g
Texture
Liquid
Category
Dairy
Top Substitute

Whole Milk

Use 1:1

Same protein range. Drop-in for vegan-to-dairy swap.

Most-used links for Soy Milk

Conversions

cupsgrams
1/4 cups61.0 grams
1/3 cups81.0 grams
1/2 cups123 grams
1 cups245 grams
1.50 cups368 grams
2 cups490 grams
3 cups735 grams
4 cups980 grams
Figures use the US cup (236.6 ml).
Density: 1.03 g/ml
Quick Convert

Ingredient-specific, density-based conversions for baking

1 cups of Soy Milk equals 244 grams
Ingredient-specific · density-based
Cup size

Recommended Tools & Pantry Picks for Soy Milk

Optional shopping references for bakers who want to compare tools and pantry options related to soy milk.

Digital Kitchen Scale

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

Shop scales

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Substitutions for Soy Milk

Storage Tips

Refrigerate after opening. Shelf-stable cartons last 7-10 days once opened.

Baking Science

Around 3% protein — within range of dairy milk. The proteins coagulate with acid (vinegar, lemon), which is why soy milk makes the best vegan buttermilk and ricotta. Curdles in very acidic coffee.

Recipe Context

For laminated dough: temperature and exact fat mass impact layer definition.

For creaming methods: weight keeps butter-to-sugar balance stable.

For custards: tight dairy ratios reduce curdling risk.

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.
  • Butter and dairy temperature affects emulsion stability and spread.

Brand Variance & Measuring Method

Baseline reference: 1 cup soy milk = 245g. In real kitchens, a practical range is usually 230g-260g per cup (6% band).

Why this happens: temperature and fat phase (solid vs softened vs melted) change effective volume.

Figures use the US cup (236.6 ml).

Common Questions

How many grams is 1 cup of soy milk?

1 cup of soy milk weighs 245 grams.

What can I substitute for soy milk?

Oat Milk (1:1), Almond Milk (1:1), Whole Milk (1:1)

Explore Soy Milk Further

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