Lean Egg Tempera Grassa Paint / Developmental

Lean egg tempera grassa prpared using egg yolk, white and commerical 'Murphy Oil Soap'. I shake the yolk and white 2 minutes, add  one eggshell full of the commercial Murphy product and shake ten minutes yielding a stable emulsion.  I add one part of a commercial watercolor paint to one part of the emulsion.  It dries quickly and flows off the brush quickly on bristol paper.

Natural Pigments/ Paints Website Link

https://www.naturalpigments.com/artist-materials/tempera-grassa/

Classic Tempera Paint: Dried Yoke Powder

I am a chemist and an artist. I will be examining the use of dried egg yolk which can be re-constituted before painting. Artists know that classic tempera paint has a short shelf life before use.
I will post our results here in a few days.