Baking Powder (Best Option)
1 to 1 teaspoon per 1 teaspoon of yeastBaking powder is a chemical leavening agent that releases carbon dioxide gas when moistened and heated, causing the batter to rise quickly. Unlike yeast, it does not require fermentation time, making it ideal for quick cakes like pound cake.
To ensure success, mix baking powder thoroughly into the dry ingredients and bake the cake immediately after mixing to capture the leavening gases. Avoid overmixing to prevent deflating the batter.
The final pound cake will have a fine, tender crumb with a slightly different texture compared to yeast-leavened products, but it will maintain the classic dense yet soft structure expected in pound cake.