Yeah, the Carthusian seems to be a Greenpoint with green Chartreuse instead of yellow. The bitters component seems to be up for grabs because some Greenpoints have none, some have a dash each of Angostura and orange, and the B&B version has just orange. These are all variations on the wonderful Brooklyn -- and aptly named for neighborhoods therein -- this blog entry is a nice rundown: Exploring the Burrough. Duggeh needs to focus on the Bensonhurst given his Cynar substituting ways, and don't miss the Park Slope in the comments. Good detective work Marc!