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.
Scaled Substitution Options
Milk + Fresh Lemon Juice or White Vinegar
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.
Plain Greek Yogurt + Water or 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.
Sour Cream + 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 →Dairy & Egg Swaps
Flours & Thickening Starches
Butter, Oils & Baking Fats
Sugars, Honey & Syrups
Yeast, Sourdough & Leaveners
Chocolate, Spices & Aromatics
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.