Question: what is a good substitute for baking soda and baking powder?
Answer: Buttermilk. Buttermilk is a fermented dairy product with a sour, slightly tangy taste that is often compared to plain yogurt. ... 
Plain Yogurt. Much like buttermilk, yogurt is produced through the fermentation of milk. ... 
Molasses. ... 
Cream of Tartar. ... 
Sour Milk. ... 
Vinegar. ... 
Lemon Juice. ... 
Club Soda.