NYT Cooking: On my first day in Lisbon, I became a statistic: I lost all my credit cards to a talented thief on the No. 28 tram. After “the incident,” I wanted to leave Lisbon, but instead, my husband Michael and I decided to tackle our must-taste list. It was on our last day in Lisbon that we tasted the cake at Landeau Chocolate. It was intense, but not overwhelming; truly chocolate, but somehow each layer...