In Joseph Jacobs's "The Rose Tree", the stepmother kills her step-daughter out of pure jealousy of her beauty, cooks the body, and serves the dish to her husband.
For example, in one episode Mao meets an attractive (but shallow) woman who wants to use him to make the dish her ancestor made, but much like her, the dish has the sauce on the outside while Mao shows it being cooked with the sauce inside (inner beauty).