The Marshmallow is a confection that, in its modern form, typically consists of sugar or corn syrup, water, gelatin that has been pre-softened in hot water, dextrose, and flavorings, whipped to a spongy consistency. The traditional recipe used an extract from the mucilaginous root of the marshmallow plant, a shrub by herb(Althaea officinalis), instead of gelatin; the mucilage was used to soothe sore throat s.Commercial marshmallows are a late-nineteenth-century innovation. Since Doumak's patented extrusion process of 1948, marshmallows are extruded as soft cylinders, cut in sections and rolled in a mix of finely powdered cornstarch and confectioner's sugar (icing sugar).