Obliged to the excellent resource site http://www.naturalpigments.com, for extensive technical information of painting, pigments, and conservation,   I am including this list of recipes for different kinds of Tempera media with which to paint on fresco and other surfaces. https://www.naturalpigments.com/artist-materials/cat/art-medium-recipes/post/tempera-emulsion-recipe/   Natural Pigments is moving during the month of November 2018-- expanding their business to my…