How much baking powder should I use for 2 cups flour?

The amount of baking powder you need for 2 cups of flour depends on the recipe and the type of baking powder you're using.

Here's a general guide:

* For cakes and muffins: 1-1 1/2 teaspoons baking powder.

* For cookies: 1/2-1 teaspoon baking powder.

* For pancakes and waffles: 1-2 teaspoons baking powder.

Important considerations:

* Double-acting vs. single-acting baking powder: Double-acting baking powder needs both heat and moisture to activate, while single-acting only needs moisture. If you're not sure what kind you have, double-acting is more common and safe to use.

* Recipe instructions: Always check your specific recipe's instructions for the exact amount of baking powder.

* Freshness: Baking powder loses potency over time. If yours is older than 6 months, you may need to use slightly more to ensure proper leavening.

Tip: If you're unsure, err on the side of using less baking powder. Too much baking powder can lead to a cake that's tough and crumbly.