She recently wrote about a new product from www.naturalpigments.com called Rublev Colours Tempera Ground
I had one failed attempt at creating traditional icon boards and some day, when I get time, I want to try again. This product looks like it would be a way to get into creating egg tempera panels without such an investment of time and patience.
I highly recommend Koo Schadler’s Egg Tempera Painting book and perusing the wonderful work on her website. (a sample below)