Dairy-Free Yeast Substitute in Bread Pudding

Baking powder is a chemical leavening agent that releases carbon dioxide gas when moistened and heated, helping to aerate the custard and bread mixture in bread pudding. This creates a lighter texture, compensating for the lack of yeast fermentation.

To use baking powder effectively, evenly mix it into the custard before combining with bread. Avoid overmixing to preserve the gas bubbles. Since bread pudding is baked at moderate temperatures, the baking powder will activate properly.

Compared to yeast, baking powder does not contribute fermentation flavors but provides a subtle lift, resulting in a tender, slightly airy pudding rather than a chewy or fermented texture.

Whipped egg whites incorporate air into the custard mixture, which expands during baking to create a lighter, fluffier texture. This mechanical leavening compensates for the absence of yeast's gas production.

Carefully fold the egg whites into the custard to maintain volume. Overmixing will deflate the whites, reducing effectiveness.

While this method improves texture, it does not replicate yeast flavor or fermentation effects, resulting in a cleaner, more neutral taste and a lighter mouthfeel.

Club soda contains dissolved carbon dioxide, which can provide mild leavening effects by introducing bubbles into the custard. This can lighten the texture of bread pudding slightly.

Use chilled club soda and fold gently to preserve carbonation. This method is subtle and best combined with other leavening techniques for noticeable effect.

The final product will have a slightly lighter texture but lacks the rise and flavor complexity yeast provides.