There is something special about sharing baked goods with family, friends and colleagues. But I'll never forget the ...

Check the expiration date to start or try this fun test to see if your baking powder is still active: Mix 1/2 teaspoon baking powder with 1/2 cup hot water; the mixture should bubble right away.

Similarly to how baking soda reacts with water and an acidic ingredient, the acid in baking powder reacts with sodium bicarbonate. Once combined with a liquid , it releases carbon dioxide.

Make baking powder at home, ... Just replace any water or milk with club soda for that bit of boost. Not a lot of power here, so don’t use it in cakes or other baking recipes.

"Baking powder is activated by liquid and by heat," says Stankiewicz. "You can test its freshness, or leavening power, by putting some in a bowl and pouring hot water over it.