Q.: Is there a way to test baking soda and baking powder for freshness?
— R.K., Hudson
A.: Aside from the freshness dates on the packages, there are easy tests to find out if these two leaveners are still active.
For baking powder, stir a teaspoon into a teaspoon of water. If it begins to bubble, it’s still fresh.
For baking soda, stir a teaspoon into a teaspoon of white household vinegar. Again, look for the bubbles to determine freshness.
In both tests, bubbles mean your leavener is still active and should work fine in your recipes.
Got a food question? Lisa Abraham has the answer. Call 330-996-3737; email her at firstname.lastname@example.org with “Ask Lisa” in the subject line; or write to her at 44 E. Exchange St., P.O. Box 640, Akron, OH 44309-0640. Please include your name (initials will be printed on request), hometown and phone number.