Cailloux refers to the pebbles that are an essential part of the vineyard's makeup. They give the wine its mineral edge that adds an extra dimension and structure to the rich Merlot fruit.
Roger Voss covers Bordeaux, Burgundy, Champagne, the Loire and South-West France as well as Portugal. His passion is matching food with wine, bringing the pleasures of the table to wine lovers. He has written six books on wine and food, and was previously national correspondent on wine for the London Daily Telegraph. He is based in the Bordeaux region.