01 - 
                Taste for salt, and hit it with more pepper if you want. Scatter more parmesan and parsley on top. Get it to the table while it's hot.
              
              
              
                02 - 
                Throw the tortellini in with the bacon in the pan. Mix in the egg-parmesan blend fast so it stays creamy, not scrambled. Splash in a bit of the starchy water you saved until it's as saucy as you like.
              
              
              
                03 - 
                Put the bacon or pancetta bits into a big skillet on medium. Sizzle until they’re golden and crisp, around 5 to 7 minutes. Stir in garlic at the end if that's your thing. Cut the heat and keep the pan nearby.
              
              
              
                04 - 
                In another bowl, beat those eggs together and toss in the parmesan until it looks like a thick sauce. Leave it there for now.
              
              
              
                05 - 
                Fill a big pot with salty water and get it boiling. Toss in the tortellini. Cook til they float and feel just right when you bite. Save a splash of the pasta water—about 1/4 cup—then drain the rest away.