The potato chip was allegedly born out of spite in 1853 at Moon's Lake House in Saratoga Springs, New York. Chef George Crum was frustrated by a customer who repeatedly sent back his fried potatoes, complaining they were too thick and soggy. In an attempt to annoy the customer, Crum sliced the potatoes paper-thin, fried them until they were brittle, and doused them in salt. To his surprise, the customer loved them. Originally called 'Saratoga Chips,' they became a local delicacy. They remained a restaurant item until the 1920s when the invention of the moisture-proof bag allowed them to be mass-produced and sold in grocery stores. Today, potato chips are one of the world's most popular everyday snacks.