Icing (food) desired colour. Sprinkles, colouring mist, edible ink designs, or other decorations are often used on top of icing. The simplest icing is a glacé icing, containing powdered sugar and water. This can be flavoured and coloured as desired, for example, by using lemon juice in place of the water. More complicated icings can be made by beating fat into powdered sugar (as in buttercream), by melting fat and sugar together, by using egg whites (as in royal icing), and by adding other ingredients such as glycerin (as in fondant). Some icings can be made from combinations of sugar and cream
Metal foam titanium foams are common for their tensile strength, corrosion resistance and biocompatibility. The back legs of Siberian Husky named Triumph received foam metal prostheses. Mammalian studies showed that porous metals, such as titanium foam, may allow vascularization within the porous area. Orthopedic device manufacturers use foam construction or metal foam coatings to achieve desired levels of osseointegration. The primary functions of metallic foams in vehicles are to increase sound damping, reduce weight, increase energy absorption in case of crashes, and (in military applications) to combat the concussive force of IEDs. As an example, foam filled tubes could be used as