Tempera is traditionally created by hand-grinding dry powdered pigments into a binding agent or medium, such as egg yolk, milk (in the form of casein) and a variety of plant gums.
egg tempera is composed of egg yolk, powdered pigment, and distilled water. the egg yolk serves as the binder that holds the pigment together. the addition of water turns the paint into a usable paste-like form. manufactured egg tempera also includes gums that act as dispersants.
