Firm brine tofu holds its shape in the pan, so it takes a proper sear without crumbling, and the golden triangles it becomes are the "golds" of the dish. The sauce is pork belly diced small and fried until it renders, softened with carrot and scallion, then thickened with soy, ketchup, oyster sauce and starch. Everything lands on the tofu at the last minute so the crust stays crisp.