There isn't actually a sauce for this pasta, well, not in the traditional sense anyway. Instead, we have kept it simple and used the flavour intense juices from the bacon, mixed with shallots and garlic and then added a little of the pasta water to loosen it all up. You could stir in some creme fraiche, cream or even a little marinara if you wanted it more saucy. This isn't a dry pasta dish at all, and pasta water actually helps to make it nice and creamy. Give it a try!