Source: http://www.thriftyfun.com/tf949840.tip.html

Testing Freshness of Baking Soda

Want to know if the baking soda in your pantry or refrigerator is still good?

Pour some vinegar in a cup or small bowl and add a bit of the baking soda. If it fizzes, it's still a-okay :-)

By Deeli from Richland, WA

Source: http://www.thriftyfun.com/tf949840.tip.html

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