As Burger King enters the next phase of its turnaround efforts, the fast-food chain is trying to lure families back to its restaurants with colored Whopper buns and kid-friendly movie partnerships. Starting Tuesday, the Restaurant Brands International chain will sell new menu items inspired by the “live action” remake of “How to Train Your Dragon.” The collaboration is more than just a one-time partnership — it’s part of Burger King’s broader strategy to lift U.S. sales. “Where we’re really starting to lean in now that we’ve made some progress in both operations and in our restaurants is on a family-first marketing strategy,” Burger King U.S. and Canada President Tom Curtis told CNBC. Burger King’s U.S. business has been in turnaround mode for more than 2½ years. After falling behind burger rivals McDonald’s and Wendy’s, the company announced plans to invest hundreds of millions of dollars in a comeback strategy to renovate its restaurants, improve its operations and spend…
