Baking Powder (Best Option)
3 times the amount of baking soda (e.g., 1.5 tsp baking powder per 0.5 tsp baking soda)Baking powder contains both an acid and a base, allowing it to release carbon dioxide when moistened and heated, similar to baking soda's leavening effect. This helps meatballs stay tender and prevents them from becoming dense.
Use about three times the amount of baking powder to replace baking soda because baking powder is less potent. Monitor the seasoning as baking powder contains salt and acid, which can subtly affect flavor.
Compared to baking soda, baking powder produces a slightly softer texture and may add a faint tang, but it maintains the desired lightness and moisture retention in meatballs.