Written in the 15th century by the German ecclesiastic Johannes Bockenheim, cook under Pope Martin V, the Registrum Coquine is one of the most interesting and funny medieval cookbooks.In the text, collected into two manuscripts, we find more than 80 recipes for prostitutes and actors, princes and peasants, pimps and priests, kings and mercenaries, in a colorful representation of the complexity of medieval society, more layered and rich than we commonly imagine. A fascinating world made of spices, flavors, preparations forgotten through time and worth to be discovered again, theoretically and practically in our kitchens. From Marco Gavio de Rubeis, author of Ancient Roman Cooking. Ingredients, Recipes, Sources, a new book dedicated to the Registrum Coquine, with a translation with notes about the recipes and the differences between the manuscripts, in addition to an introduction about foods and ingredients across the social classes in the Middle Ages and a glossary of the terms used by Bockenheim, quite different from classical Latin and frequently more similar to the vernaculars spoken in Italy.