I have visited San Francisco many times over the years, and, on each of those visits, spent many hours eating my way through various corners of the city. But somehow it wasn’t until my most recent trip that I experienced Tartine, the landmark bakery opened in 2002 by pastry chef Elisabeth Prueitt and her husband, baker Chad Robertson. Crazy, I know, particularly for this avowed carbo-loader. And while everything that passed my lips that morning was scrumptious, it was the pain au chocolat, a revelation of sweet, buttery, flaky perfection that will be haunting my dreams until I can make it back. FIORELLA V.