In the Castelli Romani DOC, up to 15% Abbuoto with other local red grape varieties can be blended in the DOC red wine along with Cesanese Comune, Sangiovese, Montepulciano, Nero Buono and Merlot. For the DOC red wines, the grapes must be harvested toa maximum yield no greater than 12 tonnes/ha with the finished wine needing to attain a minimum alcohol levels of at least 11%. In the Genazzano DOC, up to 20% Abbuoto with other local red grape varieties can be blended in the DOC red wine along with Sangiovese (70-90% of the blend) and Cesanese (10-30%). Here on the southern slopes of Monti Prenestini south of Rome, the grapes are harvested up to a maximum yield of 14 tonnes/ha with the finished wine attaining a minimum alcohol level of at least 11%.