Bring a large covered pot of salted water to a boil. Add the pasta and cook, stirring occasionally, until al dente, tender yet still firm to the bite.
Meanwhile, heat the olive oil in a large enough sauté pan to accommodate the spaghetti. Add the garlic and chili pepper and cook over medium low heat until the garlic just starts to turn golden, around 2 minutes. Remove from heat immediately, as it will continue to cook.
Drain the pasta and add to the pan along with ½ cup of the cooking water. Toss over high heat until all water is absorbed. Sprinkle with a pinch of fresh Italian parsley, if using, and serve immediately.
Garlic Variations
Finely chop or cut into short matchsticks.
Cut into thicker slices, about 3mm, and gently stew on lower heat to caramelize the sugars until tender, about 10 minutes. I use a small saucepan for this so that the oil comes up to a higher level in the pan.
Leave the garlic whole - Add the peeled clove whole to the oil, crushing it a little, if you like, to release more flavor. Remove from the oil before tossing with the pasta. Great for those intolerant to digesting garlic or who just prefer a subtle garlic flavor.
Tuscan Osteria Variation:
Fresh Pasta - Swap dried for fresh pasta, ideally chitarra (guitar spring pasta).
Cheese - Sprinkle each serving generously with freshly grated pecorino or Parmesan cheese.
Fried Sage - Top each serving with a few leaves of crispy fried sage. To fry the sage, make sure it is completely dry. Then heat a little olive oil in a frying pan over medium heat. When hot, add the sage leaves and fry until crisp, about 2 minutes. Remove, dust with a pinch of sea salt and let dry on a paper towel. Set aside.