Tiny chocolate cups are for chumps. All the best tourist guidebooks seem to agree that they're entirely traditional and absolutely vital when it comes to imbibing ginjinha -- that delicious Portuguese sour cherry liqueur -- in Lisbon, or Porto, or anywhere else on its Iberian home terrain. But while I have nothing but respect for good old Rick Steves and his globetrotting colleagues who write these things, on this one small point, I must disagree.