New restaurant serves up Dairy Queen® iconic soft-serve treats, flavorful foods and the new DQ Bakes!™ menu. Du Quoin, Ill., 2015-10-12 — /EPR Retail News/ — The Dairy Queen® system is pleased to announce the opening of the Du Quoin DQ Grill & Chill® restaurant located at 912 S. Washington Street. This location is the newest Dairy Queen…