By TF
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When I buy a bag of marshmallows, I open them as soon as I get them home, and transfer them to a large zip lock bag. Throw a couple tablespoons of powdered sugar in and shake well. They will stay soft for months, and never stick together. Don't wait until they are stuck.
Harlean from Arkansas
You could put a piece of bread in the bag which adds moisture ... much the same as doing with brown sugar that's hard.
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