Egg tempera is best mixed by hand from powdered pigments and egg yolk emulsion. It is a natural but durable medium that cures within the span of a few days, loosing its water solubility. Illustrated below is a technique called “floating” where aqueous paint is laid down in a continuous “lake,” allowing coarse pigment to settle at the bottom as it dries, and forming natural grit patterns. This series is as of yet unfinished, and will be posted soon.