Popularity isn’t always an indicator of quality, but the crowds standing in line just off the Plaza del San Francisco are there for good reason. The cacao comes from the province of Guantanamo in the town of Baracoa, and for .40CUC a piece, visitors can choose from 23 pieces of varying flavors (try the jaguey naranja or the Havana club dark chocolate truffle). The wait for a table is long so skip the line through the side door and order at the counter to-go. Mercaderes esq. a Amargura, Habana Vieja.