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Culinary & Baking Substitution Calculator

Scale 40 verified baking and cooking ingredient substitutions in exact grams and US cups, or switch to the Yeast ↔ Sourdough Starter calculator for automatic flour and water dough hydration deductions across custom batch sizes.

cup (~242g)
Quick Recipe Amount:

Scaled Substitution Options

★ Best MatchBest for Pancakes, waffles, scones, and quick breads where acidity activates baking soda

Milk + Fresh Lemon Juice or White Vinegar

1 tbsp (15g) Fresh lemon juice (or distilled white vinegar) + 1 cup (scant) (230g) Whole or 2% milk

Balance: No hydration adjustment needed; total liquid volume matches 1 cup buttermilk exactly.

Texture: Delivers identical tenderness and crumb leavening when paired with baking soda.

Option 2Best for Muffins, coffee cakes, and dense pound cakes needing rich moisture

Plain Greek Yogurt + Water or Milk

¾ cup (170g) Plain Greek yogurt or whole plain yogurt + ¼ cup (60g) Water or whole milk

Balance: Whisk thoroughly until smooth and pourable to prevent localized pockets of dense batter.

Texture: Yields a slightly richer, more tender crumb due to higher milk solids and fat.

Option 3Best for Bundt cakes, layered cakes, and soft drop biscuits

Sour Cream + Water

¾ cup (172g) Sour cream + ¼ cup (60g) Water

Balance: Equivalent total fluid hydration; adds approximately 8g extra dairy fat per cup.

Texture: Produces an exceptionally velvety, moist crumb with delicate melt-in-mouth texture.

All 40 Ingredient Substitutions

Baking Chemistry Guide →

Frequently Asked Questions

Why do baking substitutions include gram weights and hydration notes? ▾

Replacing ingredients 1:1 by cup volume often alters water activity, fat percentage, or acidity. For example, US butter is ~80% fat and ~16%–18% water, while vegetable oil is 100% fat — so swapping oil for butter requires ~85% of the weight plus a splash of milk or water.

How do you convert commercial yeast to active 100% sourdough starter? ▾

One standard 7g packet (2¼ tsp) of instant yeast equals roughly 224g of active 100% hydration sourdough starter (32× instant yeast weight). Because 100% hydration starter is equal parts flour and water by weight, subtract 112g flour and 112g water from your recipe dough.

What is the most reliable emergency substitute for 1 cup of buttermilk? ▾

Combine 1 tablespoon (15 mL) lemon juice or white distilled vinegar with enough whole or 2% milk to reach 1 US cup (225 mL milk + 15 mL acid = 240g total), or whisk ¾ cup plain yogurt with ¼ cup milk for thicker pancake and cake batters.