Cruvin is made from the rare crovino varietal (red grape), which has incredibly low yields-- so low that the Ruffinos are the only family producing wine from this grape! It's nickname in Liguria is Cruvin.
Crovino means "to fall." These grapes will fall off of the vine as soon as they are ripe, and as the label depicts, there are often local critters eagerly awaiting this phenomenon.
Punta Crena have vineyards on a unique form of red clay, and they work with several other rare indigenous varieties, including Mataossu.