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Testing Baking Powder and Soda

If you don't seem to have much success with making baked goods, there may be a simple answer—your baking powder and/or baking soda may not be fresh. The shelf life for these products is about 6 months, but here's how to test for freshness to be sure:

For baking powder, place 1 teaspoon baking powder in a cup and add 1/3 cup hot tap water.

For baking soda, place 1/4 teaspoon baking soda in a cup and add 2 teaspoons vinegar.

If active bubbling occurs, the products are fine to use. If not, they should be replaced. When buying a new can, check for an expiration date.

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