Baking Powder Substitute: Use ¼ tsp (1.2g) Baking soda + ½ tsp (1.7g) Cream of tartar
To replace 1 tsp baking powder, use ¼ tsp (1.2g) Baking soda + ½ tsp (1.7g) Cream of tartar (best for cakes, muffins, cookies, and scones baked immediately after mixing). Concoct fresh homemade baking powder using baking soda combined with cream of tartar and optional cornstarch stabilizer.
Scaled Substitution Options
Baking Soda + Cream of Tartar
Balance: Single-acting reaction: reacts instantly upon contact with moisture. Get the batter into the hot oven within 10 minutes.
Texture: Provides crisp, clean leavening lift without metallic or bitter lingering aftertaste.
Baking Soda + Cream of Tartar + Cornstarch (Make-Ahead Batch)
Balance: Cornstarch acts as a desiccant, absorbing ambient moisture and preventing premature chemical reaction in the jar.
Texture: Yields uniform volume and fine cellular structure identical to commercial single-acting baking powder.
Baking Soda + Lemon Juice / Buttermilk in Liquid
Balance: Stir baking soda into dry ingredients and acid into wet ingredients; combine immediately before cooking.
Texture: Creates vigorous initial rise ideal for griddled cakes and waffles.
All Ranked Swaps for 1 tsp baking powder
| Option | Exact Formula (per 1 tsp baking powder) | Best For | Hydration & Texture Impact |
|---|---|---|---|
| #1 Baking Soda + Cream of Tartar | ¼ tsp (1.2g) Baking soda + ½ tsp (1.7g) Cream of tartar | Cakes, muffins, cookies, and scones baked immediately after mixing | Liquid/Prep: Single-acting reaction: reacts instantly upon contact with moisture. Get the batter into the hot oven within 10 minutes. Provides crisp, clean leavening lift without metallic or bitter lingering aftertaste. |
| #2 Baking Soda + Cream of Tartar + Cornstarch (Make-Ahead Batch) | ¼ tsp (1.2g) Baking soda + ½ tsp (1.7g) Cream of tartar + ¼ tsp (0.8g) Cornstarch | Storing in a pantry airtight jar for future baking sessions | Liquid/Prep: Cornstarch acts as a desiccant, absorbing ambient moisture and preventing premature chemical reaction in the jar. Yields uniform volume and fine cellular structure identical to commercial single-acting baking powder. |
| #3 Baking Soda + Lemon Juice / Buttermilk in Liquid | ¼ tsp (1.2g) Baking soda (in dry mix) + 1 tsp (5g) Lemon juice or vinegar (in wet mix) | Pancakes, waffles, and quick skillet breads | Liquid/Prep: Stir baking soda into dry ingredients and acid into wet ingredients; combine immediately before cooking. Creates vigorous initial rise ideal for griddled cakes and waffles. |
Frequently Asked Questions
What is the difference between single-acting and double-acting baking powder? ▾
Commercial baking powder is double-acting, releasing gas once when wet and again when heated in the oven; homemade powder is single-acting and reacts immediately when mixed.
Can I replace baking powder with just baking soda alone? ▾
No, baking soda is purely alkaline and requires an added acidic ingredient (such as cream of tartar, buttermilk, or lemon juice) to release carbon dioxide gas.