Dairy Quen By 2087shab Jan 1, 1940 First Dairy Queen store opens in Joliet, Illinois Jan 1, 1941 Dairy Queen reaches 10 stores Jan 1, 1949 DQ introduces malts and shakes. Jan 1, 1951 Banana Splits appear on the menu. Jan 1, 1953 First DQ store opens in Canada. Jan 1, 1961 The Mr. Misty slush treat cools throats in the warm South. Jan 1, 1966 First commercial advertisement for Dairy Queen aired titled “Live a Little”. Jan 1, 1968 The Buster Bar gets introduced Jan 1, 1979 The DQ system debuts in the Middle East. Jan 1, 1985 More than 175 million Blizzard Flavor Treats sold in its first year. Jan 1, 1999 Pecan Mudslide Treat is introduced. Jan 1, 2001 Crispy Chicken Salad is introduced. Jan 1, 2003 The Blizzard of the Month Program kicks off. Jan 1, 2005 The record is broken on June 21, when a new World's Largest Blizzard