Baking powder is a combination of potassium bitartrate (cream of tartar) and sodium bicarbonate (baking soda). Usually cornstarch is added to prevent clumping.
Not only is making your own baking powder cheap and easy, it’s also free of unnecessary additives and aluminum free.
Day old or left over rice works best for fried rice and many other rice dishes. If you don’t have any on hand, cook rice and spread out on a cookie sheet pan or tray and put in the freezer for about 30 mins.