Vegan Baking Soda Substitute in Scones

Potassium bicarbonate is chemically very similar to baking soda, providing the same leavening action by releasing carbon dioxide when reacting with acids in the dough. It is often used as a low-sodium alternative.

Use it in a 1:1 ratio to baking soda. Since it lacks sodium, it won’t affect saltiness, so you may want to adjust salt levels slightly. It works best when the scone recipe contains an acidic ingredient like buttermilk.

The final scones will have a texture and rise very close to those made with baking soda, with no noticeable difference in taste or crumb.

Club soda contains dissolved carbon dioxide gas, which can provide some leavening through trapped bubbles during baking. It also adds moisture, which can help with dough hydration.

To substitute baking soda with club soda, reduce other liquids slightly to maintain dough consistency. This method is less reliable because the leavening depends on trapped gas rather than a chemical reaction.

Scones made this way tend to be denser and less risen than those with baking soda, with a slightly different texture that may be more tender but less flaky.

Sourdough starter contains wild yeast and lactic acid bacteria, which provide natural leavening and acidity. This can substitute baking soda by fermenting the dough and producing gas.

Using sourdough requires longer proofing times and adjusting hydration levels. It also imparts a tangy flavor that changes the traditional scone taste.

The final product will be more rustic with a chewy texture and sour note, differing significantly from classic scones but offering a unique alternative.