Robot chefs cook dishes at Dengel, a chef-free restaurant in Hangzhou, on June 15, 2022. The newly opened restaurant provides 20 dishes, all cooked by robots. As soon as one orders a dish by scanning the QR code, robots start operating immediately by adding oil, fetching flavors and cooking. It takes two or three minutes for a robot chef to cook one dish. [Photo/Sipa]

Robot chefs cook dishes at Dengel, a chef-free restaurant in Hangzhou, on June 15, 2022. [Photo/Sipa]

Staff members prepare raw materials at Dengel, a robot chef restaurant in Hangzhou, on June 15. [Photo/Sipa]