The new challenge word on the Illustration Friday website is “layer”.
Tyler Durden explains the art of making… um… soap :
The clear layer is glycerin. You can mix glycerin back in when you make soap. Or You can skim the glycerin off. You can mix the glycerin with nitric acid to make nitroglycerin. You can mix nitroglycerin with sodium nitrate and sawdust to make dynamite. You can blow up bridges. You can mix nitroglycerin with more nitric acid and paraffin and make gelatin explosives. You can blow up a building, easy. With enough soap, you can blow up the whole world.”