Burdick's has the richest, most decadent hot chocolate -- it's so thick, it could be a dessert in itself! (And you have a choice of dark, milk and ivory) If that's not enough chocolate for you, they also offer a wonderful assortment of chocolate candies and desserts. They also make a pretty good latte and offer a nice selection of teas. However, it's not the coziest or most relaxing of places; seating is extremely limited, so the remaining available space in the cafe is taken up by other people waiting for a seat... which makes it hard for customers that just want to get to the counter and order a hot chocolate. Still, if you have a hankering for hot chocolate, this is the only place in the Boston area to go.
Pros: chocolate, chocolate, chocolate
Cons: seating is a pain, very crowded