A simple sauce of olive oil and garlic is one of the purest ways of enjoying good pasta.
Cook in a large pot of boiling salted water:
Meanwhile, heat in a large skillet over medium heat:
Add and cook, stirring, until fragrant, about 2 minutes:
Discard the chile pepper, if used. Reserve ½ cup of the pasta water. Drain the spaghetti, add the hot pasta to the skillet along with the pasta water, and toss to combine. Season to taste with: