Egg Tempera

The Madonna and Child was painted with egg tempera paint which was prepared as follows: Dry pigments were ground in water to a thick slurry and then placed in containers, such as shells. The slurry was then mixed with the yoke of egg to produce the paint, which was often applied in three values, made by adding white lead to the basic color. Egg tempera paint was fast drying, and the the paint strokes tend to be short and parallel.