On the eve of her ninth birthday, unassuming Rose Edelstein, a girl at the periphery of schoolyard games and her distracted parents' attention, bites into her mother's homemade lemon-chocolate cake and discovers she has a magical gift: she can taste her mother's emotions in the cake. She discovers this gift to her horror, for her mother—her cheerful, good-with-crafts, can-do mother—tastes of despair and desperation. Suddenly, and for the rest of her life, food becomes a peril and a threat to Rose.
The curse her gift has bestowed is the secret knowledge all families keep hidden—her mother's life outside the home, her father's detachment, her brother's clash with the world. Yet as Rose grows up she learns to harness her gift and becomes aware that there are secrets even her taste buds cannot discern.