WHO: Jim Meehan WHAT: The influential bartender behind New York’s trendsetting speakeasy PDT (Please Don’t Tell) is also the co-author of the updated Mr. Boston Official Bartender’s Guide and 2009 bartender of the year at Tales of The Cocktail. On Feb. 13, he’ll be at new cocktail bar The Hawthorne to promote the release of “The PDT Cocktail Book.’’ We spoke to Meehan, 35, as he was on the road in the UK about cocktail culture, his new book, and where Boston bars stack up nationwide.