McDonald’s Korea halts popular corn burger sales over ‘stone-like particle’ complaintsMcDonald’s Korea has pulled its popular Chungju corn cheese croquette burger from menus nationwide after multiple customers reported biting into what they described as small stones. The company confirmed that it had received at least three complaints about hard, stone-like particles in the burger. The Chungju corn cheese croquette muffin, a McMorning item made using the same corn croquette, was also withdrawn from sale. Company launches investigationLaunched on 9 July, the Chungju corn cheese croquette burger was the sixth item in McDonald’s Korea’s “Taste of Korea” series, which showcases locally sourced Korean ingredients and supports regional farming communities. The burger featured a beef patty topped with a cheese croquette made using mozzarella, Monterey Jack, and glutinous corn kernels from Chungju, along with a spicy Parmesan sauce.