For the first time, a book is dedicated to Chenin, the mythical grape variety of the Middle Loire Valley where Angevin Sweetness and Tourangelle Tenderness coexist. This emblematic grape variety is described in all its facets by personalities known for their recognized expertise on both national and international levels. Its wines express themselves remarkably in two distinct geological zones: the Armorican Massif with its metamorphic rocks covering the west of Anjou, while Saumurois and Touraine rest on the Paris Basin and its sedimentary rocks. These elements provide insights into the behavior of Chenin for the production of various types of wines. It truly deserves a book dedicated to it at last! The diversity, linked to the natural conditions of this "heart of the Loire," is explored and approached in all its forms. In the Loire Valley, a northern vineyard, Chenin utilizes all the mechanisms offered by the ecosystems, both in the vineyards and in the cellars. This book aims to be collective and multidisciplinary. Academics, researchers, oenologists, professionals, committed winemakers, academicians, sommeliers, and wine enthusiasts sensitive to Chenin wines contribute their expertise and testimonies. Of course, this book contains technical elements to help the reader address their questions. But the overall content: "History, Description of AOC, Testimonials, and more..." is easily accessible to everyone. This 352-page book, adorned with remarkable photos and drawings, is a must-read for all professionals and enthusiasts interested in these Chenin wines that captivate with their divine and sublime expression, never leaving anyone indifferent. With the support of the National Union of French Oenologists - Loire Valley Region. Published with the assistance of the UNESCO Chair "Culture and Wine Traditions" at the University of Burgundy.