What is "fuddruckers"

Fuddruckers is an American fast casual, franchised restaurant chain that specializes in hamburgers. As of 2015, Fuddruckers had 77 company-operated restaurants and 111 franchises across the United States with one in Saskatoon, Saskatchewan, Canada, four in Bahrain, one in Chile, two in Italy, two in Mexico, one in Panama, one in Dominican Republic, one in Poland, one in Puerto Rico, two in Beirut, Lebanon, one in Morocco, five in United Arab Emirates and ten in Saudi Arabia and recently in Colombia. The company headquarters is in Houston, Texas.