Brooklyn’s most famous chocolatier is Mast Brothers  run by two bearded bros. They were embroiled in scandal in 2015, when a number of reports surfaced claiming their goods weren’t “bean to bar” but instead remelted French chocolate, mixed with their ingredients. I don’t think allegations are true (I’ve seen the chocolate being made at their factory/store), but does it matter? Their goods are really tasty, their packaging is gift-worthy, and they hold fun factory tours ($10) daily, every half-hour from 11am to 5pm.