Pattern

Found this in the back of my fridge and just loved the pattern that it made. Translucent swirls, lines and grids. Pattern is everywhere around ,only needs eyes to see and hands to interpret into cloth and stitch. But with everything I am working on, finishing starting I think I will leave this as something beautiful. What is it?? An egg white that was left to dry up! The egg yolk must have been used and the white kept for.... Meringues maybe.