Tags: Beverage, Food.
Mug Root Beer is a brand name of root beer made by the Pepsi company.It was originally produced by the Belfast Beverage Company in San Francisco California during the 1940s as Belfast Root Beer. An advertisement for Belfast Root Beer appears as early as 1947. The product name was later changed to Mug Old Fashioned Root Beer. An advertisement for Belfast Old Fashioned Mug Root Beer appears as early as 1952. In the late 1960s Sugar Free Mug (now Diet Mug Root Beer) was introduced.
