According to Michigan State University Extension , it's best to use baking powder before its date of expiry. Expired baking powder loses its potency after its use-by date, usually 18 to 24 months after manufacture.
The only danger of using expired baking soda or baking powder is its inability to properly rise, resulting in baked goods that are flat and dense. A bubbling mixture indicates that the expired baking powder is still good and will cause the dough to rise in the oven. Want recipes for healthy baked goods? Download the MyPlate app and get simple, tasty meals and snacks tailored to your nutrition goals.
Michigan State University Extension explains that while baking powder can last indefinitely, contamination and exposure to moisture can significantly affect its shelf life.
Moisture chemically reacts with baking powder and makes it ineffective for use in baking. Nutrition Cooking and Baking Baking Basics. Before using, always shake the can for about 10 seconds or use a fork to mix the contents.
Keep this in mind when testing the baking powder. The baking powder may actually be good but failing to mix the ingredients together may cause the test to fail. When buying baking powder, I always purchase the smallest quantity possible, unless I am expecting to use a lot of it. Rumford makes a small 4 oz can of baking powder that is perfect for the occasional use. Another great option is sharing. I am a huge fan of sharing ingredients with my family and friends.
In the video below, I tested baking powder which was 6 months past its expiration date with baking powder still within its freshness date. Notice the difference in the bubbling and fizzing sound when stale baking powder is introduced to the hot water on the left versus when fresh baking powder is introduced to the hot water on the right.
Watch the video for instructions. If the baking powder is still good or fresh, the mixture should bubble instantly and vigorously. This trick should work with both single- and double-acting powder. Baking soda aka sodium bicarbonate is said to have an infinite shelf life, but after you've had it for a few years you should test to make sure it hasn't lost all its potency. Unlike baking powder, baking soda only reacts when you add an acid to the solution. To test it, add half a teaspoon of vinegar to a cup of hot water, then stir in half a teaspoon of baking soda.
Like the baking powder, if it produces a lot of carbon dioxide bubbles, it's still good. Do you test your baking powder and soda for freshness, or just use them and hope for the best? Let us know in the comments. Things to know before you LOSE your virginity. Why are people quitting their jobs? How to deal with an unpredictable boss.
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