Question: are baking powder and baking soda kosher for passover?
Answer: While kosher for Passover baking soda and baking powder can be hard to find in supermarkets, they have been available in Orthodox neighborhoods for years. Erba Food Products, of Brooklyn, made kosher for Passover baking powder in the late 1960's. ... But Sephardic Jews of the Middle East continued to eat them at Passover.