With a maximum yield limited to 40 hL/ha, the AOC Saint-Emilion Grand Cru produces some of the highest quality wines in Bordeaux. This low yield forces winegrowers to limit the vine's load so that the grapes produce high concentrations of colour, tannic and aromatic elements. As well, they must submit their wines to a second formal wine tasting, after 12 months of aging. The Saint-Emilion Grands Crus elevates the quality of Saint-Emilion to near perfection.