Best Yeast Substitutes (With Ratios)
The best yeast substitute for a quick dough is baking powder: use 1 1/2 tsp baking powder for every cup (125 g) of flour, mix, shape and bake right away. It works for pizza, flatbread, naan and soft rolls, though the texture is more like a tender biscuit than chewy bread.
Yeast substitutes and ratios
| Substitute | Amount per 1 packet (7 g / 2 1/4 tsp) yeast | Best for | Why it works |
|---|---|---|---|
| Baking powder | 1 1/2 tsp per cup of flour | Pizza, flatbread, naan, quick rolls | Chemical carbon dioxide released in minutes |
| Baking soda + acid | 1/4 tsp soda + 1/2 cup buttermilk or yogurt per cup of flour | Soda bread, scones, flatbread | Acid and base fizz the same gas yeast makes |
| Sourdough starter | 1 cup (240 g) active starter; remove 120 g flour + 120 g water | Any bread, with time | Wild yeast and bacteria ferment the dough |
| Instant ↔ active dry yeast | 7 g, swapped 1:1 | Any yeast recipe | Same yeast species, different drying methods |
| Fresh (cake) yeast | 21 g | Any yeast recipe | Fresh yeast is about 70% water, so use three times as much |
| Self-raising flour | Replace the flour; skip the yeast | Flatbreads, scones, quick pizza | Baking powder is built in |
| Whipped egg whites | 2–3 whites folded in | Pancakes, waffles | Mechanical air lift |
Yeast versus chemical leaveners
Yeast is a living fungus. It eats sugars in the dough and, over one to several hours, releases carbon dioxide and alcohol. That slow process does more than lift:
- Gluten develops as the dough rises and is kneaded, giving a stretchy, chewy crumb.
- Flavour builds from alcohols, acids and aroma compounds made during fermentation.
- The dough expands gradually, so the gluten network can stretch around large, even bubbles.
Chemical leaveners skip all that. Baking powder releases most of its gas within minutes of getting wet, and the rest with oven heat. There's no time for gluten to stretch or flavour to develop, so keep the dough soft, handle it briefly and bake immediately in a hot oven, around 220–230 °C / 425–450 °F for flatbreads and pizza, before the gas escapes.
Sourdough starter is the only true yeast substitute, because it is yeast, a wild mix of yeasts and lactic acid bacteria. It just works more slowly.
Chef Fizz says: Swapping to baking powder? Skip the long kneading. Mix just until the dough comes together, or it will turn tough.
When not to swap
- Sandwich loaves, baguettes and sourdough-style breads. Chemical leavening can't give that chewy, open crumb. Make a soda bread or a quick bread instead.
- Enriched yeast doughs like brioche, cinnamon rolls and doughnuts. Without fermentation they turn dense and cakey.
- Doughs that need to rise overnight. Baking powder will be spent long before baking.
- Beer as a yeast swap. Most beer contains little live yeast. Beer bread rises from baking powder or self-raising flour.
Questions
Can I use baking powder instead of yeast?
For flatbreads, pizza, naan, quick rolls and pancakes, yes: about 1 1/2 tsp baking powder per cup of flour. The result is soft and biscuit-like rather than chewy and bready.
Can I swap instant yeast for active dry yeast?
Yes, 1:1 by weight in most recipes. Active dry used to need proofing in warm water first, but modern active dry can usually be mixed straight in. Instant rises slightly faster.
How much sourdough starter replaces a packet of yeast?
About 1 cup (240 g) of active starter at 100% hydration. Remove 120 g flour and 120 g water from the recipe and expect a rise of 4–8 hours instead of 1–2.
How much fresh yeast equals dry yeast?
Use about three times as much fresh yeast by weight. One 7 g packet of instant or active dry yeast equals about 21 g fresh (cake) yeast.