It was used in wall paintings in ancient Egypt and Babylonia, and during the Mycenaean period in Greece, where a little vinegar was probably added. One must first fill all the cracks and crevices in the panel with a mixture of size, glue or sawdust. The panel is then covered with cloth and the surface is coated with heavy gesso. The painter had to work with great rapidity 
It was used in wall paintings in ancient Egypt and Babylonia, and during the Mycenaean period in Greece, where a little vinegar was probably added. One must first fill all the cracks and crevices in the panel with a mixture of size, glue or sawdust. The panel is then covered with cloth and the surface is coated with heavy gesso. The painter had to work with great rapidity and sureness, because correcting errors was nearly impossible and it dried very quickly. FTP, name this oldest method of painting, which usually used egg yolk and was practiced by such painters as Giotto and Cimabue.
It was used in wall paintings in ancient Egypt and Babylonia, and during the Mycenaean period in Greece, where a little vinegar was probably added.
Tempera