"The last time I made baked ziti arrabbiata, based on one from the maestro of Italian cooking, Mario Batali, I started cooking early in the afternoon, giving myself ample time to “fail and fix” the dish if necessary. When I made the béchamel, I thought it was too thin, so I decided to reduce it—but it wouldn’t reduce. I assumed my problem was using skim milk (the only milk I had in the house), but my diagnosis was incorrect, as I found out when I told the story to the Food & Wine test kitchen crew. They explained that béchamel never, ever gets reduced. If you want a thicker béchamel, you add more flour at the start. I realized I had to stop using my ill-informed instincts to solve a problem. Mistakes aside, this is my absolute favorite baked pasta, particularly when I’m cooking for a crowd. Mario told me it was one of his favorites, too, so I got a little more advice from him on perfecting it...."