The first guide to the Catholic roots of everyday thingsfrom red wine to Santa Claus Did you know that the origins of Groundhog Day stem from a Catholic Marian devotion? Or that the common pretzel was once a Lenten reward for the pious? Why Do Catholics Eat Fish on Friday is a fascinating guide to the roots of all things Catholic. This smart and concise guide will introduce readers to the hidden heritage in many commonplace things that make up contemporary life. The reader-friendly format and the illuminating entries will make this guide a perfect gift for interested Catholics and historians alike.