Gu Xiang considers. A cake is cooked, so that's good, and it's sweet, which will help; however, a bean cake would be no good at all. But Esther probably means the kind of cakes that Gu Xiang's seen in the cafe, not the kind that Gu Xiang is used to. Gu Xiang's on weaker territory there. "Maybe a spiced nut cake," she allows grudgingly. "But not very much unless it has a lot of cinnamon, nutmeg, and ginger."