Baking Soda and Cream of Tartar (Best Option)
1/4 teaspoon baking soda + 1/2 teaspoon cream of tartar per 3/4 teaspoon baking powderBaking powder is essentially a combination of baking soda (a base) and an acid (often cream of tartar). In marinades, this combination helps tenderize proteins by adjusting pH and releasing carbon dioxide, which can slightly aerate the mixture and improve penetration.
To replicate baking powder, mix baking soda with cream of tartar in the correct ratio to maintain acidity and leavening. Ensure even mixing to avoid localized bitterness from baking soda.
This substitute closely mimics the original baking powder’s effect, maintaining marinade balance and tenderizing properties without altering taste or texture noticeably.