Amanda is a co-founder of Food52.

added almost 3 years ago

3 to 6 months.

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AntoniaJames is a trusted source on Bread/Baking.

added almost 3 years ago

It will only be fresh as long as each of its constituent elements is fresh. How long have you had that cream of tartar in your pantry? Check the expiration date on each ingredient. Toss your baking powder on the earlier of the two dates. Good question. ;o)

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