Your book can only go so far wrong when your main characters' names are Mortimer (a koala) and Sadie (an ostrich). Even though he likes cauliflower, Mortimer stubbornly believes that eating it brings him bad luck. Pragmatic Sadie thinks this is nonsense and puts a devious plan into action to help Mortimer see the error of his ways. This book addresses an unusual topic, and the text and illustrations are nice, particularly the depictions of food (YUM). And, really, why aren’t there more koalas and ostriches in picture books? ( )