 The Burger King Specialty Sandwiches are a line of sandwiches developed by the international fast @-@ food restaurant chain Burger King in 1978 and introduced in 1979 as part of a new product line designed to expand Burger King 's menu with more sophisticated , adult oriented fare beyond hamburgers . Additionally , the new line was intended to differentiate the company from other fast food hamburger restaurants at the time . Since the line 's introduction , the other sandwiches have been discontinued , leaving the chicken offering , the Original Chicken Sandwich ( abbreviated as OCS ) , as the primary product left . Additionally , other sandwiches that utilize the same roll as the chicken sandwich have been introduced to the company 's menu both domestically and internationally since the original product line was introduced . 
