This book is beautifully produced with charming line drawings and no photos. It's designed to discourage you from throwing away food, but instead using up every scrap. My family already jest about my tendency to keep odd tablespoons of gravy etc. so this book was very comforting to me. There are shocking statistics about the amount of food thrown away. Most of the recipes are designed around the bits and bobs you have left over (including odd portions of rice, potatoes or pasta), but there's also a section designed for when you bought (or were given) too much fruit and it's all about to go off.
There's a section on each typical approach to leftovers (pies, soups, stews, pancakes, risotto etc.), and then a great many variations. This should give you an incentive to tackle whatever happens to be in your fridge. It's complemented by some general pages about principles and a long, long list of storecupboard items that help extend and complement your leftovers.
A couple of caveats; most of the recipes feed two, which reflects the amount of leftovers you're likely to have. If you have enough leftover meat to feed four then it's even more thrifty to not cook it in the first place. So you can't be guaranteed to find a family meal here. None of this is food for dinner parties; it's about getting the odd extra supper or lunch out of the bits and pieces. And most of the ideas, principles and recipes are quite basic, though there are so many hints and tips that everyone should be able to find some good ideas.