America's Test Kitchen - We compared 6-month old baking powder with 10-month old baking powder, and found that biscuits made with 10-month-old powder did not rise properly. We recommend writing the date
![Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo](https://img.wonderhowto.com/img/56/76/63528416322942/0/expired-still-good-quickest-way-test-baking-soda-baking-powder-for-freshness.w1456.jpg)
Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo
![Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo](https://img.wonderhowto.com/img/00/73/63528412565694/0/expired-still-good-quickest-way-test-baking-soda-baking-powder-for-freshness.w1456.jpg)
Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo
![Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo](https://img.wonderhowto.com/img/36/64/63528501648830/0/expired-still-good-quickest-way-test-baking-soda-baking-powder-for-freshness.1280x600.jpg)
Expired or Still Good? The Quickest Way to Test Baking Soda & Baking Powder for Freshness « Food Hacks :: WonderHowTo
![Just a little PSA to check the expiration dates of your baking powder… cake on the left made with baking powder expired in 2020. Cake on the right with baking powder bought Just a little PSA to check the expiration dates of your baking powder… cake on the left made with baking powder expired in 2020. Cake on the right with baking powder bought](https://i.redd.it/74ba85dbri971.jpg)