I thought this deserves a new thread since those of us using small amounts of baking powder and baking soda have to worry about how well they store. I did some research and came up with this information.Baking Soda:If stored properly in airtight containers at room temperature, baking soda will have an indefinite shelf life. You can test its effectiveness by mixing 1/4 tsp. with 2 tsp. of vinegar or lemon juice. If the mixture does not actively bubble, your baking soda is no longer good for baking. (From ochef.com)Baking PowderFresh baking powder should be good for three to six months once you open the container. There should be a date stamped on the bottom of the can so you can tell if you're buying fresh baking powder in the first place. It begins to lose its ability to leaven baked foods when it comes in contact with moisture, so storing it in a dry place will increase its longevity. For the same reason, never dip a damp measuring spoon into the can. The reason cornstarch is an ingredient in baking powder is that it helps keep the active ingredients--baking soda and cream of tartar or another acid--dry. But cornstarch can only do so much and only for so long. If you're not a prolific baker, you should be buying baking powder in small quantities. To test the vitality of your baking powder, add a teaspoon of it to a third of a cup of hot water. If it foams and bubbles, it has enough oomph left. If it just sits there, it's time to run to the store or — here's a thought — you can make your own. Combine a tablespoon of baking soda with 2 tablespoons of cream of tartar and 1-1/2 tablespoons of cornstarch. It may not have the same potency as a good store-bought double-acting baking powder, but it will serve in a pinch. (From cookies-in-motion.com)
Great info, Birder. That should clarify it for all of us.
That is good to know and I have copied it for future reference.
Good idea! This helps tremendously.... and I am sure there are dozens of other such items that we can add to this informative topic. thanks, Birdy. (PS., I hope you don't mind this nickname... I think it's kinda cute, given your screen name)...
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