What distinguishes Old Vine Zinfandel from regular Zinfandel?

Old Vine Zinfandel is the term used to describe wines made from grapes grown in vines that have, on the average, reached 50 years, but are sometimes hundred years old or more. These old vines give less grapes per vine however the grapes produce wines with a smoother flavor and richer depth. This is the reason why the Old Vine Zinfandel wines are the considered to be the freshest and also the most favored by the customers. They are known for showcasing the rich, ripe fruit flavors, along with nuanced spice and also earthy notes.