Spaghetti with Egg, Onion, and Bacon

1. 1

   Bring a large pot of salted water to boil.

2. 2

   Slip the spaghetti into the boiling pasta water, and stir.

3. 3

   Cook the bacon in a skillet over medium heat until the fat has mostly rendered, about 4 to 5 minutes.

4. 4

   (If your bacon is very lean, you can add a drizzle of olive oil to help start the rendering of the fat.)

5. 5

   Push the bacon to one side of the pan, and add the onion.

6. 6

   Let both cook separately until the onion is tender, about 5 minutes, then mix the two back together.

7. 7

   (If you like, you can drain off the excess bacon fat here and replace it with olive oil.)

8. 8

   Ladle 4 cups pasta water into the skillet with the bacon and onion, bring to a rapid boil, and quickly reduce the sauce.

9. 9

   Meanwhile, whisk the egg yolks with 1/4 cup hot pasta water in a small bowl.

10. 10

    When the sauce has reduced by about half and the spaghetti is al dente, scoop the pasta into the sauce with tongs or a spider.

11. 11

    Add the scallions, pepper, and salt to taste.

12. 12

    Toss the pasta until it is coated in the sauce and the scallions are wilted.

13. 13

    Remove the pan from the fire, and quickly mix in the egg yolks, stirring until creamy.

14. 14

    Toss the pasta with the grated cheese, and serve immediately.

* Per serving · 4 servings · Values may vary.