Then, in 1954, Ray Kroc, a milkshake machine ... chocolate, strawberry, and vanilla. In 1949, potato chips were swapped with french fries and McDonald's began selling milkshakes.

The bare bones McDonald’s menu from the 1950s was heavy ... The priciest thing you could order was a milkshake (chocolate, strawberry, or vanilla), which would cost you two FDR coins.