CS/Modern Luxury is doing a roundup and vote-off of summer cocktails from some of the city's brightest hotspots....all made with Ultimat Vodka. The Ultimat Underground caught my eye, and so I made it last night (didn't have Patron Citronge, so I used Patron Silver, muddled with oranges). Very tasty, but strong! It's definitely one to sip slowly. Check out out the web site for that, plus more recipes!