How To Make Egg Tempera-- a great art history/science lesson. It's also a lot of fun. When we did this, we used a different recipe. Try drying each egg yolk with a paper towel to remove excess whites. This should cut down on the foaming. Also, substitute some of the water with a couple drops of white vinegar. We used crushed eyeshadow, charcoal from the fire pit, cocoa powder, turmeric, and gatorade as fun experiments in pigmenting!