Substitutions · 5 dishes here use it
Out of baking powder
Lift, on a clock. It starts working the moment it is wet and again in the oven, so a batter that sits on the counter has already spent half of it.
Everything below is judged against that job. A swap that covers it is a swap; one that only looks similar is not.
What to reach for
Instead · 1
baking soda plus an acid
a quarter teaspoon of soda and half a teaspoon of cream of tartar per teaspoon of powder
- What it gets you
- Baking powder, made, because that is what baking powder is.
- What it costs you
- The second rise. Commercial powder is double-acting and this is not, so the batter goes in the oven immediately.
Instead · 2
baking soda plus buttermilk or yogurt in the batter
a quarter teaspoon of soda per teaspoon of powder, and swap some liquid for buttermilk
- What it gets you
- Lift, and a more tender crumb, which is why old recipes work this way.
- What it costs you
- The recipe's liquid balance, which has to move to accommodate it.
Instead · 3
self-rising flour, if you also have that
swap the flour entirely and drop the powder and the salt
- What it gets you
- The right amount of leavening already blended in.
- What it costs you
- Control over the ratio, which matters in a delicate cake.
What none of them do
There is no swap that gets you lift without a chemical reaction. If there is no soda and no powder in the house, the honest move is to make something that does not rise.
Where the swap will be tasted · 3
These need it and are short enough that nothing hides: 4 required ingredients or fewer, which makes baking powder a quarter of what is in the pan. Make the swap a decision rather than a repair.
Check what else is in the pan
The company baking powder keeps in this library, counted off required ingredients. A swap that argues with the top two is the wrong swap, whatever a chart says.