This pasta dish, with its creamy, tangy, lemon sauce, has long been a favorite in my household. It’s the sort of dish that takes so little time to put together but also really seems to impress guests, so we make it both for ourselves on lazy evenings at home as well as when we’re entertaining (I love having at least one easy, quick-to-prepare dish on the menu). We make it so often, in fact, that this recipe made its way into my second cookbook, Acquacotta, which was inspired by six months we spent living on the southern Tuscan coast, where lemon trees abound.