Trend alert! This week we'll be taking a look back at the different trends that defined 2012, but one we can't help but call attention to early. Cocktails are popping up on draft lines around town, and a visit to Public this weekend confirmed that it will be the latest venue to dedicate a tap line to a spirited offering. While sister restaurant Saxon & Parole offers ice-cold Manhattans from the draft, Public plans to devote the lines to variations of the negroni. The recipe will rotate based on the season, and the spigot will dish out a savory winter version starting this week.