▁" New com er ▁of ▁the ▁Year " ▁by ▁the ▁G ault ▁M illa u ▁wine ▁guide . ▁ ▁Since ▁ 2 0 0 1 ▁Will i ▁Sch ae fer ' s ▁son ▁Christoph , ▁and ▁Christoph ' s ▁wife ▁Andrea ▁have ▁been ▁assist ing ▁with ▁running ▁the ▁win ery . ▁ ▁V ine y ards ▁and ▁wine ▁ ▁Will i ▁Sch ae fer ▁works ▁with ▁ 3   he ct ares ▁of ▁R ies ling ▁v ine y ards , ▁including ▁v ines ▁in ▁Gra acher ▁H imm el reich , ▁Gra acher ▁Dom pro bst ▁and ▁We hl ener ▁S onn enu hr . ▁W ine ▁writers ▁Stephen ▁Brook ▁and ▁Ste phan ▁Rein hardt ▁are ▁of ▁the ▁opinion ▁that ▁the ▁best ▁w ines ▁from ▁this ▁estate ▁are ▁usually ▁produced ▁from ▁the ▁Gra acher ▁Dom pro bst ▁parc els . ▁The ▁oldest ▁v ines ▁are ▁around ▁ 6 0   year s ▁of ▁age ▁and ▁ 6 0 - 7 0 % ▁of ▁the ▁v ines ▁are ▁un gra ft ed , ▁resulting ▁in ▁low ▁yields . ▁ ▁The ▁w ines ▁fer ment ▁and ▁are ▁m ature d ▁for ▁around ▁six ▁months ▁on ▁le es ▁in ▁old ▁ 1 0 0 0   lit re ▁f oud res ▁before ▁bott ling . ▁ ▁Ar ound ▁ 2 0 0 0 ▁to ▁ 3 0 0 0 ▁cases ▁of ▁wine ▁are ▁produced ▁each ▁year . ▁Only ▁a ▁very ▁small ▁number ▁are ▁made ▁in ▁a ▁Tro cken ▁or ▁off - d ry ▁style ▁and