Jim's Restaurants is a chain of restaurants based in San Antonio, Texas. Jim's is best known for its breakfast and charbroiled Frontier Burgers. Founder, G. Jim Hasslocher built his first burger stand in 1947. The burger stand grew and became a drive-in burger concept with carhops, which eventually led to full-service restaurants in several locations. As of April 2010, Frontier operates 16 locations in the San Antonio area and 3 in Austin.