A smash burger, also written smashburger, or smashed burger, is a type of hamburger in which a ball of ground beef is pressed firmly onto a hot griddle or skillet, creating a thin patty with crisp edges and a browned surface. The technique maximizes the Maillard reaction, producing a savory crust while keeping the interior juicy.

Zaxbys is an American chain of fast casual restaurants offering chicken fingers, sandwiches, chicken wings, appetizers, and salads. The chain operates primarily in the Southern United States and has more than 900 locations. Most Zaxbys restaurants are owned and operated through franchising.

Sonic Corporation, founded as Sonic Drive-In and more commonly known as Sonic, is an American drive-in fast-food chain owned by Inspire Brands, the parent company of Arby's, Jimmy John's, Buffalo Wild Wings, Baskin-Robbins, and Dunkin'. Sonic, founded by Troy N. Smith Sr., opened its first location in 1953, under the name Top Hat Drive-In. Originally a walk-up root beer stand outside a log-cabin steakhouse selling soda, hamburgers, and hot dogs, Sonic currently has over 3,400 locations in the United States.

Schlotzsky's is an American franchise chain of restaurants, specializing in sandwiches and pizza. The company is headquartered in Atlanta, Georgia. Schlotzsky's has over 310 franchised and company-owned locations throughout the United States. Most locations are in the south and southwestern United States, but the company is expanding into areas across the country, particularly the north and southeast.

Burger King Corporation is an American fast food chain of hamburger fast food restaurants, headquartered in Miami-Dade County, Florida. The company was founded on July 23, 1953, as Insta-Burger King, a Jacksonville, Florida–based restaurant chain. After Insta-Burger King ran into financial difficulties, its two Miami-based franchisees David Edgerton (1927–2018) and James McLamore (1926–1996) purchased the company in 1959.

Subway IP LLC, trading as Subway, is an American multinational fast food restaurant franchise that specializes in submarine sandwiches (subs) and wraps. It was founded by Fred DeLuca and financed by Peter Buck in 1965 as Pete's Super Submarine Sandwiches in Bridgeport, Connecticut. After several name changes, it was renamed Subway in 1972, and a franchise operation began in 1974 with a second restaurant in Wallingford, Connecticut.

Subway IP LLC, trading as Subway, is an American multinational fast food restaurant franchise that specializes in submarine sandwiches (subs) and wraps. It was founded by Fred DeLuca and financed by Peter Buck in 1965 as Pete's Super Submarine Sandwiches in Bridgeport, Connecticut. After several name changes, it was renamed Subway in 1972, and a franchise operation began in 1974 with a second restaurant in Wallingford, Connecticut.