Which burger chain uses the slogan "Yum"?

Red Robin was originally known as Sam's Tavern back in the 1940s, however the owner, Sam, changed the name to Sam's Red Robin due to a song he and his barbershop quartet used to sing. In 1969, the tavern was changed into a restaurant and the name was changed to just Red Robin. The company uses "Yum" as their slogan.

Asked by Jason Forbes · Last updated 5 years ago · 751.1K views · SOURCE