So here is an awesome trick (or is a tip?) for you. I just discovered this trick on Sunday, when I went to make pancakes and had no mix. So I thought, ok no big deal, I'll make them from scratch.
Then I discovered I had no baking powder. Ok, no big deal, I'll make waffles.
I still had no baking powder. Ok, no big deal, I'll find a recipe for pancakes that does not require baking powder.
Then I learned how to make baking powder.
And it is crazy simple.
2 parts Cream of Tartar (example 2 tbsp)
1 part Baking Soda (example 1 tbsp)
That is it.
Use like normal in a recipe. For example, the Chocolate Waffles I ended up making.