The five-ingredient classic that teaches you emulsification: a glossy sauce built from tomatoes, good oil, and starchy pasta water — no cream required.
400 g
🍅 ripe tomatoes ›
or one can of San Marzano
30 g
🧀 Parmesan ›
finely grated
Mise en place
Before you start
Prep checklist
ripe tomatoes — or one can of San Marzano
Bring a large pot of water to a boil and salt it until it tastes like the sea — about 1 tablespoon per liter.
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This is your only chance to season the pasta itself; the sauce can't reach inside the noodle.
Warm the olive oil and sliced garlic together in a cold pan over medium heat until the garlic turns pale gold and smells sweet, about 2 minutes.
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Starting garlic in cold oil gives you a wide window before it burns. Golden = sweet, brown = bitter.
Add the tomatoes (crushed by hand) and a pinch of chili flakes. Simmer until the raw edge cooks off and the sauce thickens slightly, about 10 minutes.
Meanwhile, cook the spaghetti 2 minutes short of the package time. Before draining, scoop out a full cup of the cooking water.
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That cloudy water is liquid starch — the secret to a sauce that clings instead of sliding off.
Transfer the pasta into the sauce with a splash of pasta water and toss vigorously over medium heat until the sauce turns glossy and coats every strand, 1–2 minutes.
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You are emulsifying: starch + oil + motion = silk. If it tightens up, add another splash of water.
Off the heat, fold in the basil and half the Parmesan. Plate, and finish with the rest of the cheese and a thread of your best olive oil.
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Basil and heat are enemies — always off the heat, always last.
This recipe is a technique in disguise. Once the pasta-water emulsion is in your hands, you can make cacio e pepe, aglio e olio, and half of Rome's menu without a recipe.
Canned San Marzano tomatoes for fresh tomatoes (better in winter, honestly)
Pecorino Romano (use ⅔ the amount) for Parmesan
Gluten-free spaghetti for wheat spaghetti — save extra pasta water; GF starch behaves differently
Afterwards
Keep, reheat & pair
Storage
Refrigerate up to 3 days. Revive in a pan with a splash of water, never the microwave alone.
Freezing
The sauce freezes beautifully for 3 months; cooked pasta doesn't — freeze sauce alone.
Reheating
Reheat gently: covered in a 160°C oven for 15 minutes, or in a pan over medium-low with a splash of water or stock. The microwave works at 50% power in short bursts — full blast toughens proteins.
Make ahead
Most braises and sauces improve overnight. Sear-and-serve dishes: do every step up to the final cook, then finish fresh.
Wine pairing
A mid-weight Italian red: Chianti Classico or a chilled Frappato in summer.
Beer pairing
Match intensity: lagers for delicate dishes, amber ales for roasted flavors, stouts for the rich and braised.
On the plate
Serve it with
Sides
·
Crusty bread or buttered rice
·
Roasted seasonal vegetables
Garnish
Fresh herbs added off the heat
Where it comes from
A little history
Pasta al pomodoro is younger than you'd think — tomatoes only entered Italian pots in the late 1700s. Naples made it a religion.
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