Baking soda made from Cream of Tartar. This baking soda is perfect for baking or to prepare meringues and other confections. Cream of Tartar Baking Soda is is a natural raising agend used to replace baking powder for the preparation of cakes, pizza and bread. Cream of Tartar is ideal for the preparation of baked products, giving them softness without weighing them down. Use Cream of Tartar to stabilize egg whites for meringues.