McDonald’s, the Oak Brook, Illinois-based fast food purveyor has moved its Oven Selects business from roster shop Leo Burnett, back to DDB Chicago. DDB is also a roster shop and the former agency on the account. The Oven Selects line includes Crispy Buffalo Chicken, Beef ‘n’ Provolone, Leaning Tower Italian, two New York Reubens — one with turkey, one with corned beef — and the turkey sandwich with bacon, lettuce and tomato. According to Bloomberg, the six sandwiches culminate 15 years of trial and error including a mid-1990s test of McStuffin’s, which were too expensive to make for what customers were willing to pay.