This book discusses selected waste and by-products of the food industry. Two commonly used methods of managing these are discussed: anaerobic digestion and composting. The book reviews current research and also brings in the author’s own research insights to the discussion. The book is aimed at food industry specialists, waste management specialists, scientists, and students. However, the book describes problems in an accessible way, which will make this book useful for beginners in the waste/biogas/composting sector.