Can you sub regular baking powder for double acting powder?

You can substitute regular baking powder for double-acting baking powder, but you need to use twice the amount.

Here's why:

* Single-acting baking powder reacts only once, when it comes into contact with moisture.

* Double-acting baking powder reacts twice: once with moisture and again with heat.

This means that double-acting baking powder provides more leavening power, and you need more of the single-acting kind to achieve the same result.

However, there are some things to consider:

* Recipe instructions: Always check the recipe instructions first. Some recipes are specifically designed for double-acting baking powder, and using single-acting might not give you the desired results.

* Flavor: Single-acting baking powder can sometimes impart a slightly metallic taste to baked goods.

* Availability: Double-acting baking powder is much more common and readily available, so it's usually a good idea to stick with that unless your recipe specifically calls for single-acting.

In summary: It's possible to substitute regular baking powder, but double-check your recipe and consider the potential impact on flavor. If you're unsure, it's always best to err on the side of caution and use double-acting baking powder.