At the start of the twentieth century, on the edge of the Russian Empire, a family prospers. It owes its success to a delicious chocolate recipe, passed down the generations with great solemnity and caution. A caution which is justified: this is a recipe for ecstasy that carries a very bitter aftertaste …

Tumbling down the years, and across vast expanses of longing and loss, generation after generation of this compelling family hears echoes and sees reflections. Great characters and greater relationships come and go and come again; the world shakes, and shakes some more, and the reader rejoices to have found at last one of those glorious old books in which you can live and learn, be lost and found, and make indelible new friends.