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Spaghetti Aglio e Olio Recipe

Recipe by Pedro M. A. Neves

Spaghetti aglio e olio is a classic Roman pasta dish that celebrates simplicity and quality ingredients. Built on just spaghetti, garlic, and olive oil, this humble recipe delivers bold, authentic flavors that rely on perfect technique rather than complexity. A pantry staple elevated to restaurant quality through proper emulsification and timing.

Ingredients

• 400 g spaghetti (14 oz)
• 150 ml extra-virgin olive oil (2/3 cup)
• 8 cloves garlic, thinly sliced (about 30 g)
• 1/2 teaspoon red pepper flakes
• Fine sea salt to taste
• Freshly ground black pepper to taste
• 30 g fresh Italian parsley, roughly chopped (1 oz, about 1/4 cup)

Instructions

1. Bring a large pot of salted water to a rolling boil. The water should taste like seawater. Add spaghetti and cook according to package directions until al dente, typically 9-10 minutes. Reserve 240 ml (1 cup) of pasta water before draining.

2. While the pasta cooks, pour the olive oil into a large skillet and set over medium-low heat. Add the sliced garlic and red pepper flakes.

3. Cook the garlic gently for 3-4 minutes, stirring frequently with a wooden spoon. The garlic should soften and become pale golden but never brown. If it browns, it will taste bitter and the oil will be ruined.

4. Once the garlic is fragrant and lightly golden, remove the skillet from heat and let it cool for 30 seconds to bring the temperature down slightly.

5. Add the drained spaghetti directly to the skillet with the garlic oil, tossing gently with tongs or two forks to coat the pasta thoroughly.

6. Add 120 ml (1/2 cup) of reserved pasta water to the skillet while tossing continuously. The starchy water will emulsify with the oil to create a light, creamy sauce that clings to the pasta. Add more pasta water as needed, a few tablespoons at a time, until the consistency is glossy and just slightly wet.

7. Season generously with fine sea salt and freshly ground black pepper to taste. Toss one final time to distribute seasoning evenly.

8. Divide the spaghetti among four warm plates or bowls. Drizzle any remaining oil and garlic from the skillet over each portion and garnish with fresh Italian parsley.

Substitutions

• For dietary restrictions, use gluten-free spaghetti following the same cooking method and timing.
• Substitute half the olive oil with butter for a richer, more luxurious version, though this deviates from tradition.
• Replace red pepper flakes with freshly ground black pepper only for a milder profile.
• Use dried parsley if fresh is unavailable, though fresh is strongly preferred for flavor and color.

Tips

• Reserve pasta water before draining—this starchy liquid is essential for emulsifying the oil and creating the sauce rather than a greasy dish.
• Cook the garlic slowly over medium-low heat; high heat will burn it quickly and ruin the entire dish with a bitter taste.
• Emulsify the oil and pasta water thoroughly by tossing continuously; this creates a silky coating rather than a slick layer on top.

Spaghetti aglio e olio originated in Rome and Southern Italy as a humble, economical dish that working-class families could prepare from pantry staples. It remains a symbol of Italian cooking philosophy: respect for quality ingredients and mastery of fundamental technique over complicated methods.

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