baking soda

US /ˈbeɪkɪŋ ˌsoʊdə/
UK /ˈbeɪkɪŋ ˌsoʊdə/
"baking soda" picture
1.

a chemical compound with the formula NaHCO₃, used in baking as a leavening agent and in various other applications such as cleaning and deodorizing

:
Add a teaspoon of baking soda to the cake batter for a lighter texture.
You can use baking soda to remove odors from your refrigerator.