McDonald's 'Chungju Sweet Corn Cheese Croquette Burger' sold 1 million units in just two weeks after its release, gaining immense popularity. However, problems arose when some customers complained that they felt stone fragments while eating the product. After receiving these complaints, McDonald's Korea halted sales of the product early for safety reasons. Currently, McDonald's Korea is investigating the cause in collaboration with the raw material supplier and has stated that there is no possibility of resuming sales.