Irvine, Calif. — Wienerschnitzel, the world’s largest hot dog franchise, has signed a new area development agreement with Lake Charles, La.-based Henderson Family Restaurants, LLC to build 20 new Wienerschnitzel restaurants throughout the state of Louisiana over the next 13 years. Since 1961, Wienerschnitzel has become the nation’s largest hot dog quick-service chain, and with the integration of the iconic Tastee Freeze ice cream, the California-based franchise system has seen 8 years of consecutive same store sales growth. Wienerschnitzel is actively expanding outside its historic footprint and is targeting new …