Intergument

Intergument: noun. In biology, the internal covering of an organ. In Ancient Egypt the intergument of a pig's liver was used to create the equivalent to modern day candy wrappers, which were used to contain particularly savory pieces of honeycomb. This is known from the surprisingly intricate depictions of these in hieroglyphics, and some have theorized that these depictions are the earliest known examples of advertising, which would explain the level of detail and amount of these hieroglyphics.