Zinfandel (also known as Primitivo) is a variety of black-skinned wine grape. DNA analysis has revealed that it is genetically equivalent to the Croatian grapes Crljenak Kaštelanski and Tribidrag, as well as to the Primitivo variety traditionally grown in Apulia (the “heel” of Italy), where it was introduced in the 18th century. The grapes typically produce a robust red wine and semi-sweet rosé. The grape’s high sugar content can be fermented into levels of alcohol exceeding 15 percent. The taste of the red wine depends on the ripeness of the grapes from which it is made. Red berry fruit flavors like raspberry predominate in wines from cooler areas, whereas blackberry, anise and pepper notes are more common in wines made in warmer areas and in wines made from the earlier-ripening Primitivo clone.