During extremely hot weather, replace the water daily. Just think, if you had to drink your bath water, you would want it replaced daily, too. Marshmallow Care Marshmallows are a great treat. They are great in many salads, desserts, or just plain out of your hand. To keep marshmallows from becoming hard as they lose moisture, store them in an airtight freezer bag or container in the freezer so they won t dry out.
Marshmallows are easy to cut when they are frozen.
Use clean, dry scissors to snip the marshmallows to the desired size pieces. If the marshmallows stick to the scissors, dip them in a little powdered sugar. Or if you have room temperature marshmallows, dip the scissors in cold water as needed to prevent sticking. If your marshmallows become hard, seal them in a plastic bag with a couple of slices of white bread and let stand for a couple of days. They will regain their moisture and be ready to use.