 The commune of San Colombano al Lambro is home to the "Denominazione di origine controllata" (DOC) wine which includes 100 hectares (250 acres) producing a single red wine.The wine is a blend of 30-45% Croatina, 25-40% Barbera, 5-15% Uva Rara and up to 15% of other local red grape varieties to round out the blend.All grapes destined for DOC wine production need to be harvested to a yield no greater than 11 tonnes/ha.