A strange brew of Vodka, and egg yolks Also a nail disorder where the Natural Nail plate separates from the nail bed The distal end of the matrix sheds an epithelial layer of tissue that fuses with the underside of the nail plate during formation This layer has small rails that run the length of the nail that fit into equally tiny grooves within the Bed (dermis) Mechanical force, heat, trauma, etc can pull these rails out from the grooves and hence separation