A common factor affecting Bordeaux wines' flavours is Cabernet Sauvignon's harvest yields. Throughout Bordeaux, there is a legal maximum permitted yield of 50 hectoliters (hl) per hectare (ha). With the aid of global warming and vigorous rootstocks, many Bordeaux vineyards can easily surpass 60 hl/ha, with some estates taking advantage of the legal loophole of plafond limite de classement ("ceiling limit classification") that permits higher yields during "exceptional" years. This has had an adverse effect on the quality of production from some producers who regularly use grapes harvested at excessive yields. In recent years there has been more of an emphasis on keeping yields low, particularly for an estate's Grand vin.
A common factor affecting Bordeaux wines' flavours is Cabernet Sauvignon's harvest yields. Throughout Bordeaux, there is a legal maximum permitted yield of 50 hectoliters (hl) per hectare (ha). With the aid of global warming and vigorous rootstocks many Bordeaux vineyards can easily surpass 60 hl/ha, with some estates taking advantage of the legal loophole of plafond limite de classement ("ceiling limit classification") that permits higher yields during "exceptional" years. This has ha,d an adverse effect on the quality of production from some producers who regularly use grapes harvested at excessive yields. In recent years there has been more of an emphasis on keeping yields low, particularly for an estate's Grand vin.