JoJo’s ShakeBAR Highland Park pop-up will bring Biggie Shakes to Michael’s Grill & Salad Bar from September 17-30, 2026. The limited run features Chocolate Nirvana, The Wonder Years and an exclusive Birthday shake with a cake-batter flavor on Chicago’s North Shore. JoJo’s ShakeBAR is bringing its oversized Biggie Shakes to Michael’s Grill & Salad Bar in Highland Park, Illinois, for a limited-time collabor