Expiration Dates
A reader has asked: How long will baking soda and baking powder stay active once opened?
A: Baking soda is pretty much indefinitely good, but baking powder usually has a “use by” date on the bottom of the can.
Guest User
A reader has asked: How long will baking soda and baking powder stay active once opened?
A: Baking soda is pretty much indefinitely good, but baking powder usually has a “use by” date on the bottom of the can.