No baking powder or cream of tartar for recipe - what to do?

I am making a coffee cake that calls for 1 1/2 teaspoons baking soda and 1 1/2 teaspoons baking powder. Problem is, I don't have any baking powder. I know you can make baking powder from baking soda + cream of tartar, but I don't have any cream of tartar either. Help!No baking powder or cream of tartar for recipe - what to do?
Sorry, but you will have to buy some if you want your coffee cake to turn out. Baking is more precise than cooking. You're dealing with formulas and not recipes. Everything needs to be exact in order for then to turn out the way you want them to.No baking powder or cream of tartar for recipe - what to do?
There are ways to scientifically get your cake to rise properly by substituting other ingredients but it will change the flavor. For example, replacing some liquid with buttermilk and adding baking soda you will get a rise. Baking soda and vinegar will also get a rise.





I doubt you have buttermilk (not a common staple) and the vinegar will add an unpleasant taste.





Go to the market or skip the cake.
Buy bisquick. It already has baking soda and baking powder
Borrow some from a neighbour until you can get to the store. There is no subsitute other than what you mentioned.