This dish gets its name from the look of the glossy amber-colored sauce swirled over the tan tofu. You should enjoy the taste and texture of tofu to try this dish -- it's its own flavor, not pretend meat -- so use a good, quality tofu. This is silky, savory, and tasty, and more than the sum of its simple parts. From Japanese Cooking: A Simple Art, by Shizuo Tsuji. Note: I have never added salt to anything containing soy sauce... until this dish. The recipe really does need it.