The commonly cellular materials are glass and foamed plastic like polystyrene, polyolefin, and polyurethane. The gloves are often coated with solid or foamed latex, nitrile or polyurethane. The foamed neoprene of the suit thermally insulates the wearer. Some famous food-foams are foamed espresso, foamed mushroom, foamed beet and foamed coconut. In 1947, researchers in Dow's Chemical Physics Lab found a way to make foamed polystyrene. They are also foamed to make insulation, or cast into moulded products. Even paper-coating or particle foamed products can be produced by this very versatile biopolymer. After fine pulverization and uniform mixing, it is melted at high temperature, foamed and annealed. Hamburger Speck is a sort of candy made out of foamed sugar with various coatings. It is also called aircrete, foamed concrete, foamcrete, cellular lightweight concrete or reduced density concrete. Melts can be foamed by creating gas bubbles in the material. Eyeballs were protruded, and blood had foamed from mouths and noses. Macchiato, meaning "stained", is an espresso with a dash of foamed milk. The pellets are foamed by "flashing" into the (lower pressure) atmosphere to expand.