This year’s pour-off features bartenders from 10 of San Antonio’s top restaurants in a fierce battle to crown the official 2010 RiverTini—an original cocktail that embodies the festive spirit and cultural mélange along the San Antonio River. Your Groupon gets you in the door, where delectable snacks provided by Hotel Contessa abound and guests peruse the libational offerings to the sounds of live music and shaking cocktails. Mixomaniacs from Rosario’s, Pavil Restaurant and Bar, Restaurant Insignia, and more will shake, toss, twirl, and eventually pour fresh cocktails for your sampling or swigging pleasure, on a mission to dethrone last year’s winner, Aldaco’s Stone Oak, and have their unnamed cocktail be christened the 2010 RiverTini. After the tasting has commenced and the limbs and brains of guests are properly be-jelloed, attendees vote on favorite cocktails for the people’s choice prize. Meanwhile, a separate panel of prominent local personalities declares the official winner, and 100 baby pegacorns are released back into the wild to celebrate.