The Brooklyn may be less well-known that its neighbor, but it's equally delicious. The maraschino liqueur (we recommend Luxardo) adds a rich sweetness, which compensates for the fact that dry rather than sweet vermouth is used. You may have trouble tracking down Amer Picon, a French version of Amaro, an apertif most commonly made in Italy. Amer Picon is difficult to find in the United States, but an Italian Amaro such as Ramazzotti will substitute quite well. Or, you can skate by with a few dashes of bitters.