Shake Shack, known for its made-to-order burgers, crispy chicken, and hand-spun milkshakes, is set to open its seventh Connecticut location in Newington on Thursday, July 23rd. The new restaurant will be located at 3329 Berlin Turnpike and will open at 11 a.m. On opening day, the first wave of guests will receive custom Shake Shack keychains.