The Tenuta di Petrolo proudly sits on the site of an ancient Etruscan settlement where foundations of Roman buildings can still be seen. From these foundations rises the Torre di Galatrona, or the watchtower of the medieval Galatrona castle. It is in the shadow of this structure that a villa was built in the early 18th century, and the tower remains the physical and symbolic center of the winery that now lies here. Today Villa Petrolo welcomes visitors to an extensive retreat that revolves around their outstanding wine production. Of their 272 hectares, 31 are planted to vines and fall in the Colli Aretini zone of Chianti. The Bazzocchi family, owners of Petrolo since the '40s, stepped up their standards of production in the late '80s and now focuses on just two bottlings, Galatrona and Torrione.
Torrione is made entirely from pure Sangiovese grapes, both those that come from historic vines of the 70's and ones more recently planted with high density. The yield per plant is notably restricted (max 2.5 lbs per vine plant), allowing a concentration of all the noble components of the grape, fundamental for the full-bodied character of this wine. The maceration on the skins lasts for 14 days. Afterwards, the malolactic fermentation takes place, partly in French barrels of 225 liters and partly in 30 Hl oak barrels. The wine then is aged in French oak barriques, one third new, for approximately 15 months.