Michael Rulhman has created a daring guide to freeing the home cook from the tyranny of the cookbook: mastering the ratios that make up so many basic foods. All manner of doughs, batters, sauces, and more, have ratios of ingredients that are the basis of creating bread, cake, or mayonnaise. Everything else added is just a delightful variation. Opening with a list of ratios, Rulhman goes onto explain how each ratio works and gives examples of the joy of creating variations.