Can you use corn starch instead of baking powder in banana bread?

You cannot use cornstarch as a direct replacement for baking powder in banana bread. Here's why:

* Baking powder is a leavening agent. It reacts with moisture and heat to produce carbon dioxide bubbles, which make the bread rise and become light and airy.

* Cornstarch is a thickener. It absorbs liquid and creates a thicker texture. It doesn't produce any gas, so it won't make the bread rise.

If you run out of baking powder, you can try one of these options:

* Make your own baking powder: Mix 1 tsp baking soda with 2 tsp cream of tartar.

* Use a combination of baking soda and buttermilk: The acid in buttermilk will react with the baking soda to create a leavening effect. You'll need to adjust the recipe slightly.

* Use a different leavening agent: Try using self-rising flour, which contains both baking powder and salt.

Remember, it's important to follow the recipe closely for the best results. Experimenting with ingredient substitutions can sometimes lead to unpredictable outcomes.