What’s the difference between baking powder and baking soda?
Baking soda is pure sodium bicarbonate, whereas baking powder also contains an acid, such as cream of tartar, and cornstarch. Baking soda is a raising agent that contains one or more acid ingredients, such as cocoa powder or buttermilk. Baking powder is better for recipes that contain little or no acid ingredients.
Does baking soda go bad?
Once a box of baking soda is opened, it has a shelf life of about six months to a year. If you happen to find an unopened box, chances are it may still be good even if it’s past the expiration date (generally about 18 months from the time it went on sale).
Can I replace baking soda with baking powder?
Baking powder is another leavening agent that can replace baking soda, but its effect isn’t as strong. Use about three times the amount of baking powder as you would baking soda.