This Caprese sandwich from 30th Street Cafe is proof that a few quality ingredients are all you need to make an excellent sandwich. It's made with fresh mozzarella, herbaceous pesto, tomato slices and vinaigrette, served on your choice of bread (as a traditional sandwich or a panino). I upgraded my bread to a fresh-baked, flaky croissant ($1 extra)—it was the right call. My only regret was agreeing to split it. More