Buttermilk

Dairy & Fatstop 10

Cultured dairy product with a tangy flavour and thick consistency.

Reviewed by CupOrGram Editorial TeamData methodology: NIST-derived density references + recipe testing notesMethodology

Properties

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

Milk + Lemon Juice

Use 1 cup milk + 1 tbsp lemon juice, let sit 5 minutes

The acid curdles the milk, mimicking buttermilk's acidity and thickness.

Conversions

cupsgrams
1/4 cups60.9 grams
1/3 cups80.4 grams
1/2 cups122 grams
1 cups244 grams
1.50 cups366 grams
2 cups487 grams
3 cups731 grams
4 cups975 grams
Density: 1.03 g/ml
Quick Convert

Density-accurate conversions for baking

grams
Science Note: Precision within +/-0.002g
Accuracy: +/-0.002gHow this is calculatedSource: NIST-DB-72

Recommended Tools & Pantry Picks for Buttermilk

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

Digital Kitchen Scale

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

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Substitutions for Buttermilk

Storage Tips

Refrigerate. Lasts 2-3 weeks. Freezes well for baking use.

Baking Science

Acidity (pH ~4.5) tenderizes gluten, activates baking soda, and creates a tender crumb. The tangy flavour enhances many baked goods.

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 buttermilk = 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.

Explore Buttermilk Further

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