As the saying goes, necessity is the mother of invention.

For bartender Wes Price, and vodka salesman John G. Martin, necessity came in the form of figuring out a way to sell an oversupply of ginger beer and a spirit that wasn’t all that successful in the US. Adding some lime to both, they served the mix in a copper mug as Martin’s girlfriend owned a company that made them—and they just so happened to have a surplus of the mugs.