Louis Catizone, Co-Owner of St. Agrestis at the taproom. Courtesy of St. Agrestis.GREENPOINT — A Greenpoint-based brand [http://stagrestis.com] of Italian-inspired liqueurs and pre-bottled cocktails, St. Agrestis, with a following among Brooklyn’s bitter cocktail crowd, opened its new taproom this month for tours on weekend afternoons at 233