Peters Art Online Shop: Gouache and Tempera Paints
Gouache consists of coarsely ground pigments and chalk, which are bound with gum arabic. These paints can be used for opaque, as well as transparent painting techniques. Thus Gouache and Tempera combine the advantages of transparent watercolors with those of opaque oil paint.
Gouache and Tempera paints can be applied in thin or thick layers. White image parts can certainly be subsequently achieved with solid color.