Marshmallow mastic

I offer a recipe for the simplest mastic of powdered sugar and marshmallows. With such mastic, you can easily decorate (cover) a cake, make various figures or a bow. It is perfectly stored in the refrigerator or freezer. Just before use, be sure to heat up.

Ingredients:
Marshmallow — 300 Gram,
Powdered sugar — 550-570 Gram,
Water — 1.5-2 tablespoons,