Baking soda is a leavener that requires an acidic ingredient in a batter to help a baked good rise. |
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By the late 19th century baking powder had replaced yeast entirely as a leavener for cakes. |
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Animal fat, or lard, which has a high smoking point, is very effective as a leavener in flaky pastries and tart shells. |
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An ad for baking powder in a local 1916 newspaper meant he could use that as a leavener, a welcome alternative to drafting pearl ash from a campfire. |
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