What's baking soda? Baking soda and bicarb soda are the same thing. In USA, bicarb soda is called baking soda. What's bicarb soda/bicarbonate of soda? Bicarbonate of soda (otherwise known as bicarb soda) is a pure leavening agent. It's alkaline and commonly … [Read more...] about All the Baking Sodas