Baking Powder (Best Option)
3 teaspoons per 1 teaspoon of baking sodaBaking powder contains baking soda along with an acidifying agent and a drying agent, allowing it to neutralize acidity and provide leavening in one. In tomato sauce, it helps reduce acidity and bitterness by neutralizing excess tomato acids.
Use a higher quantity (about three times) because baking powder is less concentrated in sodium bicarbonate. Stir well to ensure even distribution and avoid clumping.
The sauce will be less sharp and slightly smoother in taste, with no noticeable texture change compared to baking soda.