Hasselbacks are gorgeous: they have style and show up a beautiful crust and texture. They look a bit like Persian shutters. Try adding a couple of tablespoons of pesto to the cooked potatoes, spooning the pan juices over as well so that they are nicely oiled and the pesto runs into the cavities. Roast them for another 5 or 10 minutes and serve immediately. A nice, not-too-hot, grainy mustard works well, too. Choose rounded potatoes that will sit nicel