Can I use bacon instead of guanciale?
Bacon is a common substitute, but guanciale has a more complex, less smoky flavor that defines authentic carbonara. If using bacon, reduce the quantity slightly as it renders more fat.
Why is my sauce scrambled instead of creamy?
Scrambled eggs mean the heat was too high or the pasta was too hot when mixed. Toss the pasta off heat or in a cool bowl, then add the egg mixture slowly while stirring constantly.
Should I use whole eggs or just yolks?
This recipe uses egg yolks only for a richer, silkier sauce. Whole eggs work but produce a lighter result. Traditional Roman carbonara varies on this point.
Can I make this dish ahead?
Carbonara is best served immediately after tossing. It does not reheat well as the sauce will break down. Prepare components ahead, but combine just before serving.
What pasta shape works best?
This recipe uses ziti, which catches and holds the sauce well. Spaghetti, rigatoni, or bucatini are equally traditional and authentic choices.