⭐ Club Soda (Best Vegan Option)
Replace 1 teaspoon baking powder with 1/4 cup club soda (reduce other liquids accordingly) Quick tip: Adds carbonation for lightness; minimal flavor impact but less reliable rise.
Club soda contains dissolved carbon dioxide which can provide some leavening effect when incorporated into the custard mixture. The bubbles can help lighten the texture slightly.
Because the carbonation is less stable than chemical leavening, the rise may be less pronounced and inconsistent. Use fresh club soda and fold gently to retain bubbles.
The texture may be lighter but less uniformly risen compared to baking powder, and the custard may be slightly more delicate.