Cacio e pepe or pasta with Parmesan and pepper is a super simple dish that only takes minutes to make. Since this recipe only consists of a couple of ingredients, you want to use the best you can find. With the use of superb ingredients, the dish speaks for itself. The key to cacio e pepe is the reserved pasta water. The water contains starch which helps the sauce stick to the pasta. Serve this delicious pasta dish with a winter green salad and you've got dinner.