Premium wine production is centered on the Calingasta, Ullum and Zonda departments as well as the Tulum Valley.[1] In addition to producing premium red varietals made from Syrah and Douce noir (known locally as Bonarda), the San Juan region has a long history of producing sherry-style wines, brandies and vermouth. The high yielding Cereza vine is also prominent here where it is used for blending and grape concentrate as well as for raisin and table grape consumption.[2]