Baking Powder: If you're out of baking powder, you can substitute with baking soda and cream of tartar. Vanilla extract: ... How to measure baking ingredients without scales.

Make baking powder at home, ... Just use a 2:1 ratio of cream of tartar to baking soda, then measure as you would for baking powder. Baking Soda vs. Baking Powder: What's the Difference?

Baking soda is pure sodium bicarbonate.It is alkaline, which means it has a pH above the neutral 7 and reacts with acidic ingredients. Think about the old baking soda-and-vinegar school experiment.