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Reviving Old Cake Mix
Course:
Basic Methods
Ingredients
Boxed Cake Mix
Baking Powder
Instructions
When boxed cake mix is past its "Best By" date, this indicates that the leavening agent is likely no longer at full strength.
If it is less than a year past the date add 1/2 teaspoon baking powder.
If more than a year; use 1 teaspoon baking powder.