1Bring a large pot of aggressively salted water to a boil.
2Cook spaghetti until al dente.
3Reserve 1 1/2 cups of the starchy pasta water, then drain.
4While the pasta cooks, gently heat the olive oil in a large skillet over medium-low.
5Add the garlic slices and whole parsley stem, stir constantly until the garlic turns light golden (about 3 minutes).
6Stir in the chili flakes and a pinch of salt.
7Let them bloom for 30 seconds, then remove the parsley stem and take the pan off the heat.
8Add about ½ cup of the reserved pasta water to the skillet and stir/whisk vigorously to combine with the oil until it looks creamy and slightly thick.
9Return the pan to medium-low heat and add the drained spaghetti along with another splash of pasta water.
10Toss everything aggressively with tongs for 1–2 minutes, drizzling in 1 to 2 more tablespoons of olive oil and a bit more pasta water as you go, alternating between the two while tossing nonstop until the sauce turns silky and glossy.
11Turn off the heat and stir in the chopped parsley.
12Taste and add a tiny pinch of salt if needed.
13Plate immediately, spooning any extra sauce from the pan over the top.
14Garnish with lemon zest and a sprinkle of Parmesan if desired (add cheese after plating).
Ingredients
8 oz spaghetti
0.33 cup extra virgin olive oil
8 garlic cloves, thinly sliced
1 tsp red chili flakes
1 to 1 1/2 cups reserved pasta water
1 whole parsley stem, for infusing
0.33 cup fresh parsley leaves, finely chopped
fresh lemon zest, for garnish
freshly grated Parmesan cheese, for serving
1 pinch salt
Equipment
large potlarge skillettongs
Tips
When cooking garlic, stir constantly until it turns light golden, not brown.
When forming the sauce, vigorously stir/whisk the pasta water with the oil to create a creamy emulsion.
When tossing the spaghetti with the sauce, alternate between drizzling in olive oil and pasta water nonstop for 1-2 minutes until the sauce is silky and glossy.
Add Parmesan cheese after plating so it doesn't break the emulsion.