Cook the Pasta:

1. Boil Water: Fill a large pot with water, add 1 tsp of salt, and bring it to a rolling boil.
2. Cook Pasta: Add the spaghetti and cook according to the package instructions until al dente. Reserve 1 cup of pasta water, then drain and set aside.

Prepare the Garlic Oil:

3. Heat the Oil: In a large skillet or saucepan, heat the olive oil over medium-low heat.
4. Cook the Garlic: Add the sliced garlic to the oil and cook slowly, stirring often, until golden and fragrant, about 3-5 minutes. Be careful not to burn the garlic, as it can turn bitter.
5. Add Chili Flakes: Stir in the red chili flakes and cook for an additional 30 seconds to release their flavor.

Combine Pasta and Sauce:

6. Add Pasta: Add the drained pasta to the skillet with the garlic oil. Toss to coat the spaghetti evenly in the oil.
7. Adjust Consistency: Add a splash of the reserved pasta water to loosen the sauce and help it cling to the noodles.
8. Season: Stir in black pepper and adjust salt to taste.

Finish the Dish:

9. Add Fresh Herbs: Sprinkle the chopped parsley over the pasta and toss to combine.
10. Optional Garnishes: Top with grated Parmesan cheese, lemon zest, or toasted breadcrumbs for added flavor and texture.

Serve:

11. Plate and Enjoy: Divide the pasta among plates or bowls and serve immediately, with extra Parmesan and chili flakes on the side for those who like more kick.