Two highlights of this particular treat from Three Tarts in Chelsea. One, the pot de creme itself. Chocolate-espresso, almost laughably tiny, though intense in flavor, with the espresso overtaking the chocolate. Potent and luxuriously smooth, topped with a single coffee bean. And two, the cup and saucer, which you get to keep: a whimsical matching set, and ideal for your morning espresso. $6.50 for the two. It's slightly cheaper if you order it to stay and return the cup and saucer—but what's the fun in that?