▁including ▁the ▁general ▁A OC ▁Bor de aux ▁( but ▁not ▁for ▁w ines ▁l abeled ▁Bor de aux ▁Sup érieur ). ▁Here ▁Mer lot ▁blanc ▁can ▁be ▁used ▁in ▁up ▁to ▁ 3 0 % ▁of ▁the ▁bl end ▁along ▁with ▁Sem illon ▁( which ▁must ▁make ▁up ▁at ▁least ▁ 7 0 % ▁of ▁the ▁bl end ▁itself ), ▁Sau v ignon ▁blanc , ▁Mus c ad elle , ▁Colomb ard , ▁Mau z ac , ▁O nd enc ▁and ▁U g ni ▁blanc . ▁Mer lot ▁blanc ▁dest ined ▁for ▁A OC ▁wine ▁production ▁are ▁limited ▁to ▁har vest ▁yields ▁no ▁greater ▁than ▁ 5 5 ▁h l / ha ▁( appro xim ately ▁ 3 . 7 ▁tons / acre ▁with ▁the ▁finished ▁w ines ▁need ing ▁to ▁att ain ▁a ▁minimum ▁alco hol ▁level ▁of ▁at ▁least ▁ 1 1 %. ▁ ▁Other ▁Bor de aux ▁A OC s ▁that ▁permit ▁the ▁usage ▁of ▁Mer lot ▁blanc ▁in ▁their ▁designated ▁white ▁w ines ▁include ▁Bor de aux - H aut - Ben au ge ▁( maxim um ▁har vest ▁yield ▁of ▁ 5 0 ▁h l / ha ), ▁C ô tes ▁de ▁Bour g ▁( but ▁not ▁the ▁C ô tes ▁de ▁Bl aye ) ▁and ▁Entre - De ux - M ers ▁( which ▁like ▁the ▁C ô tes ▁de ▁Bour g ▁limits ▁har vest ▁yield ▁to ▁ 6 0 ▁h l / ha ). ▁In ▁all ▁these ▁A OC s ▁Mer lot ▁blanc ▁plays ▁a