Whenever I go to Boston I always check out the sam adams brew tour. (Make sure you get one of their flowers or call them to get times) It is a couple blocks walking distance form the orange t line. The tours have a donation of 1 or 2 dollars, but everytime I go, I seem to miss the passing of the donation hat. It is pretty informal tour, the tour guides are always drinking, which I find hilarious. You then get to go to their back room where they hand out pitchers ( 3 or 4 different kinds) to taste test. Last time I went, i didn't have lunch and left there pretty buzzed. You even get to keep the glass. I always say, if I lived in Boston, I would be there every day!