What can i use instead of baking powder in a recipe?

I want to make waffles, but in the recipe it says to use baking powder...What can I use instead of baking powder? Is baking soda ok?What can i use instead of baking powder in a recipe?
Baking soda is OK as long as there is an acidic ingredient to activate the baking soda. Baking powder is just baking soda with cream of tartar. Cream of tartar is the acid that activates the soda. You could add cream of tartar. Or, you could add buttermilk or lemon juice to the batter (both acidic ingredients).





If you tell me what the other ingredients are and their amounts, then maybe I could help a little better.





Edit: I don't think you should use the old milk. I also don't think that water is a good substitute for the milk. Do you have any instant or evaporated milk? You could add water to either one of those. How about half and half, soy milk, or whipping cream? Also, I bet that maybe 1/2 tsp of distilled white vinegar might work for the acid and would not effect the flavor of the waffles.What can i use instead of baking powder in a recipe?
When it comes to baking powder and baking soda.. You should be replacing the stuff you have every 3 months. Old product won't give you the proper chemical reaction, which definitely has an effect on the end product. Also, keep tightly covered. Moisture from the air will degrade the product, reducing effectiveness.








Try using a different recipe if you don't have what you need OR make something with the ingredients you have available.
Tips?





Home Made Baking Powder


2.5 parts of cream of tartar


1 part of baking soda


1/2 part of cornstarch





Note:


a. Mix thoroughly and sift 3 times.


b. Put up in small tins.





I hope it helps.
You can also use flour.
Use self-rising flour %26amp; you don't have to add baking powder or salt.