Baking Powder and Baking Soda. Bakewise 2008, p. 59. Use only baking powder unless you recipe has a lot of acidic ingredient such as yogurt or sour cream. Use 1 t baking powder per cup of flour.
Salt enhances sweetness and flavor by blocking bitterness. In cakes and sweet breads, use about 1 t salt per about 2 c flour
Oil. Makes cakes and sweet breads moist, but counteracted by protein in eggs. Use 1 egg per 1/4 oil.