Zinfandel Stories: Central Coast from Zinfandel Advocates & Producers on Vimeo. California’s Central Coast, known for its rugged beauty, is also home to several world-class wine regions. For Zinfandel, no other AVA compares to that of Paso Robles. Planted by Italian immigrants in the 1920s, Zinfandel has had plenty of time to take root. National Zinfandel Day is a worldwide celebration of the Zinfandel grape variety, intended to give Zinfandel lovers around the globe a platform to express their passion for the grape and the wines made from it.