How to Test Baking Soda and Baking Powder for Freshness
Using fresh ingredients is key to making sure your recipes turn out.
Instructions
How to Test Baking Soda for Freshness
Place a teaspoon of baking soda into a small bowl.
Add approximately 3 tablespoons of distilled white vinegar.
If the baking soda bubbles a lot, it is still fresh.
If the baking soda doesn’t react or only bubbles slightly, it isn’t fresh anymore.
How to Test Baking Powder for Freshness
Place a teaspoon of baking powder in a heat-safe bowl.
Add ¼ cup of boiling water to the bowl.
If the baking powder bubbles up a lot, it is still good.
If it doesn’t react or only reacts slightly, it is no longer fresh.
Notes
The general guideline for baking soda (unopened) is up to 2 years, and for baking powder (unopened) up to 1 year. If you live in a climate that is humid, they can deteriorate faster.