Wines named in honor of the egg-shaped stones, the “cailloux “(pebbles) which are present in many top Bordeaux vineyards. These were dragged to Bordeaux in great abundance by glaciers that have since retreated to the Pyrennes, the cailloux today are known to be a key to the greatness of the Bordeaux soil and its wines. Many, if not most, of Bordeaux's greatest chateaux are located above deep beds of cailloux. These stones favor a better drainage and force the vines deep into the soil to find their nutrients. Forced to search for resources, the plant will regulate fruit production resulting in berries with concentration of fruit and aromas; an essential requirement to produce refined and full bodied Bordeaux wines.