Baking Powder. How long does it last?

I have had this baking powder since 1996 and I wonder if its expired since its only powder.Baking Powder. How long does it last?
It usually only last about a year. I would throw it out, you could mess up a good recipe with that old stuff!Baking Powder. How long does it last?
Sorry to say that there is no way baking powder will still work after that much time--so, it's a good thing it's cheap. It lasts for only a year (some say 6 months) after it's been opened.





I always try to remember to get a permanent marker and mark (on the plastic lid of the baking powder canister) the month and year that I opened it so that I have an idea how old it is. But if you forget, never fear, just add a half-teaspoon or so to a cup or small bowl of hot water. If it bubbles and fizzes, it will still work. If it doesn't, you'll have to get some new baking powder, because the old powder will not do the job. Good luck with your recipe.
i would definatly get a new one.. wayyyyy outdated, there should be an expiration date on it someplace.. which is probably about 10 yrs ago :P
there should be an expiration date on it, but you shouldn't use the baking powder that's been around for the last 11 years. I think in general it really only have a shelf life of 1-2 years.
Baking power does last a long time, but 11yrs I would say toss it 4 sure......
Well, there should be an expiration date on the box. Personally, I think that 11 years is way to long to own a box of baking powder. You might want to think about buying a new box.
what can go wrong with it


a combination of dry crystalline compounds


Test it


put a small amount in a tall glass IN the sink and add some vinegar it will foam overboard


maybe 25 years from now you can toss it $$$$


But remember it also contains baking soda that absorbs odors. ?? :~)


Pssst I keep mine in the freezer %26gt; %26gt; No moisture to begin with.
If cake won't rise you would have to toss all your ingredients and if I were you I would not risk wasting expensive ingredients such as butter and eggs, not to mention your time and effort, for the sake of something as cheap as baking powder. If you are stuck over weekend and cannot find fresh baking powder you can substitute with half amount of baking soda. Sift thoroughly with the flour. Evidently you don't do much baking!
I only buy Baking Powder in small amounts as it usually is no good after 6 to 8 months. It is important you keep is chilled so put it in a container and keep it in the fridge. You will see ta\hat some people think it can last 18 months but you will never get the proper rising in your baking when it has sat that long.