saleratus
/ˌsæləˈreɪtəs/
noun
- A white powder used in baking to make dough rise; baking soda or potassium bicarbonate.
- Before modern baking powder, cooks often used saleratus as a leavening agent.
- She added saleratus to the dough to make it light and fluffy.
- The old recipe called for a teaspoon of saleratus to help the biscuits rise.