Chef-tested recipe
Neapolitan-style spaghetti coated in an emulsion of olive oil, gently toasted garlic, chilli, and pasta water
Spaghetti aglio e olio is an exercise in restraint. Garlic is cooked slowly in extra-virgin olive oil until pale gold, never brown, then starchy pasta water is worked into the oil to create a glossy coating. There is no cream and no prepared sauce; the texture comes entirely from finishing firm spaghetti vigorously in the pan.
Recipe at a glance
- Servings
- 4 servings
- Prep Time
- 5 mins
- Cook Time
- 15 mins
- Total Time
- 20 mins
- Cuisine
- Italian
- Course
- Main dish
- Cooking Method
- Boiling, gentle infusion, and pan emulsification
- Difficulty
- Easy
- Best Served With
- A bitter-leaf salad, grilled seasonal vegetables, or roasted whole fish.
Before you begin
Ingredients & equipment
Gather what you need first, then cook through the method with confidence.
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Equipment
- Large stockpotpaid link
- Wide frying panpaid link
- Tongspaid link
- Chef’s knifepaid link
- Cutting boardpaid link
- Measuring jugpaid link
- Digital kitchen scalepaid link
Ingredients
For the pasta
- Dried spaghettipaid link: 400 g
- Water: 3 litres
- Fine sea saltpaid link: 30 g
For the aglio e olio
- Extra-virgin olive oilpaid link: 100 ml
- Garlic: 40 g, thinly sliced
- Dried peperoncino flakespaid link: 2 g
- Flat-leaf parsley: 20 g, finely chopped
- Reserved pasta cooking water: 180 ml, as needed
Preparation Overview
Bring the water to a rolling boil in a large pot. Slice the garlic evenly so every piece colours at the same rate. Chop the parsley and keep the stems out of the final garnish. Place a large frying pan beside the pasta pot so the spaghetti can move directly into it.
Method
Salt the boiling water and add the spaghetti. Cook, stirring during the first minute, until 2 minutes short of al dente.
Meanwhile, combine 80 ml olive oil and the sliced garlic in a cold wide frying pan.
Set the pan over medium-low heat and cook for 4–5 minutes, swirling often, until the garlic is fragrant and only pale golden at the edges.
Add the peperoncino and cook for 15 seconds. If the garlic is colouring quickly, remove the pan from the heat.
Reserve at least 250 ml pasta water. Transfer the undercooked spaghetti directly into the garlic oil.
Add 120 ml pasta water, increase to medium-high heat, and toss or stir vigorously for 1–2 minutes until the water and oil form a glossy emulsion around the pasta.
Add more pasta water in small additions until the spaghetti is al dente and evenly coated rather than oily.
Remove from the heat. Fold in the parsley and remaining 20 ml olive oil.
Taste for salt and serve immediately on warm plates.
Beginner Technique Notes
Garlic should be pale gold, not brown. Brown garlic makes the whole dish bitter.
Moving the cooked spaghetti straight from the water carries useful starch into the frying pan.
Add pasta water gradually. Too much at once creates soup; too little leaves separated oil.
The sauce is ready when no puddle of clear oil remains at the bottom of the pan.
Tips and Variations
Use good extra-virgin olive oil because it is the principal flavour.
Traditional versions do not require cheese. Taste the clean garlic-and-oil emulsion before considering additions.
For aglio, olio e peperoncino, increase the chilli to 3 g.
Do not rinse the pasta; its surface starch is essential to the emulsion.
Serving Ideas
- Twirl into warm shallow bowls and spoon any remaining garlic emulsion over the top. Serve at once because the coating tightens as it cools.
Storage
Best eaten immediately. Refrigerate leftovers for up to 2 days and reheat in a frying pan with 30 ml water. Freezing is not recommended.
Nutritional Value
Allergen Notes
Contains wheat and gluten. Use certified gluten-free spaghetti if required, adjusting the pasta-water quantity because starch release varies.
Frequently Asked Questions
Why is my aglio e olio greasy?
The oil and pasta water were not tossed vigorously enough to emulsify, or too little starchy water was used.
Can minced garlic be used?
Thin slices cook more evenly and are less likely to burn. Minced garlic needs especially low heat.
Does authentic aglio e olio contain cheese?
Cheese is not required and many classic versions omit it entirely.
Can fresh chilli replace dried peperoncino?
Yes. Use a small thinly sliced red chilli and add it with the garlic near the end of infusion.
