Rosario Sireci purchased the Feudo Montoni estate in the late 1800s upon discovering a wealth of ancient vines and passed down the property and closely held ?secret knowledge? to his son and grandson. ?Our wines are manipulated as little as possible by human intervention,? says Fabio Sireci of his family?s methods, which employ the ?cru concept? of bottling a wine from the best grapes in a single vineyard. Feudo Montoni?s pre-phylloxera vineyard, for example, is planted with native Nero d?Avola clones.