Ratio: The Simple Codes Behind the Craft of Everyday Cooking by Michael Ruhlman is a unique culinary science book that focuses on the importance of ratios in cooking. Ruhlman breaks down recipes into their fundamental ratios, empowering readers to create their own dishes and experiment with flavors. With a wide range of recipes and insightful explanations, this book is a must-read for those looking to understand the building blocks of cooking.