By Evan Dawson, Managing Editor The wine that is quite possibly the single most interesting wine in the Finger Lakes is turning 20, sort of, in 2011, and the McGregor family is throwing a party. (This is a family that really knows how to throw a bash.) Details on the event to follow, but first, let's lift the veil on a little history. The McGregor Black Russian Red is, technically, older than 20 years. Bob McGregor spent the 1980s searching for the right blends and combination to unlock the potential in these unusual grapes — Saperavi and Sereksiya Charni. Today,…