Spaghetti Carbonara is one of my favourite pasta dishes! I love how creamy it is, it always amazes me how the authentic version of this dish doesn't include any cream. It's simply the starch from the pasta water combining and emulsifying with the cheese and egg yolks which creates a silky delicious sauce.
I like to use Pancetta in my recipe because its easy to get hold off, but guanciale is better if you can get your hands on it. If not, use streaky bacon.
I have listed pecorino romano here as the cheese of choice, but if you can't find that use parmesan cheese instead.