From the Kitchen of Half Truth by Maria Goodin. The book is being released by Sourcebooks Landmark on April 2, 2013.
Amazon says this about the book: Infused with the delicious warmth of Chocolat and the captivating feeling of School of Essential Ingredients, From the Kitchen of Half Truth is the warm, tender story of Meg, whose cooking-obsessed mother has always regaled her with fantastical memories of their lives that can't possibly be true. As sickness threatens to bury her mother's secrets forever, Meg decides she must know the truth-but no matter how hard she tries, Meg can't convince her mother to reveal a thing. As the two spend one last summer together, savoring cooking lessons, Meg explores the power of the stories we tell ourselves in order to create the lives we want.