We're fortunate to have bought a property with a well designed root cellar already in place. Until I read this book, I had no idea how a root cellar 'worked'. This book suggests what foods are best for root cellaring, how long to expect to store them, and what temperatures should be maintained. Had I not read this book I would have wasted time and enery, and lost the nutrients in some foods by canning them rather than root cellaring them. A city dweller friend of mine borrowed my book and has decided to buy it. There are variety of good root cellar plans complete with illustrations and drawings for nearly any situation.