In 1924, Frank Stewart set out to develop the world's best-tasting root beer, which he intended to sell in order to supplement his income as a schoolteacher. With the secret recipes in hand, he soon opened his first Stewart's Drive-In, where he served ice-cold Stewart's Root Beer in tall, frosty mugs. The creamy taste of Stewart's Root Beer was an instant success and has been enjoyed by consumers for more than 80 years!

For the first 66 years, Stewart's Root Beer was only available at Stewart's root beer stands and later, at Stewart's Drive-Ins. In 1990, Cable Car Beverage Corporation acquired the bottling rights for Stewart's and began selling Stewart's Root Beer in 12 oz. amber glass bottles.