Bacalhau, dried and salted cod, is a Portuguese staple. It is usually served on social occasions and at traditional Christmas Eve dinners.Most of the time, bacalhau is served with potatoes. On our last night in Portugal, we had dinner at a restaurant that specializes only in serving bacalhau. Before the bacalhau arrived, I stuffed myself with the numerous appetizers, so I had little room left for the well presented cod dish. Caetano, the tour manager, was disappointed at my half-eaten plate. I assured him it wasn’t the dish. It was my full belly that’s to blame.