via Wikimedia Commons

This early sketch of the famous Coca-Cola bottle was drawn by bottle manufacturer Earl R. Dean in 1915. While looking for inspiration in images of the coca plant and kola nut (the two key ingredients in Coca-Cola's recipe at the time), Earl stumbled upon an intriguing image of a different plant, a cocoa pod. He used that analogy to design a contoured bottle replicating the cocoa pod's elongated oval shape and vertical grooves.