Classic Spaghetti Aglio e Olio: Perfect Every Time
The first time you get it right, you'll know. The garlic turns pale gold, not brown. The oil slicks each strand of spaghetti without pooling at the bottom of the bowl. And the whole thing comes together in the time it takes to boil water.
Spaghetti aglio e olio is deceptively simple. Just garlic, olive oil, pasta, and a little heat. But the technique matters more than the ingredient list suggests. I'm going to walk you through the method that gives you a silky, emulsified sauce every time—no cream, no butter, no cheese required (though Parmesan is welcome).
The Golden Ratio
I keep the ratio at 6 tablespoons of olive oil per 1 pound of pasta. That might sound like a lot, but it's not. The oil needs to coat 16 ounces of spaghetti, and some of it will stay in the pan or get absorbed. With less oil, the pasta feels dry. With more, it gets greasy. Six tablespoons hits the sweet spot.
Use a good extra-virgin olive oil here. Not the most expensive bottle in your cabinet, but one you like the taste of. The oil is the backbone of the dish.
Toast the Garlic, Don't Burn It
Slice 8 cloves of garlic as thinly as you can. A sharp knife helps. Thin slices toast evenly and release their flavor into the oil without turning bitter.
Heat the oil in a 12-inch skillet over medium-low. Add the garlic and red pepper flakes. The flakes bloom in the warm oil, infusing it with gentle heat. Stir the garlic often. You want it to sizzle softly, not aggressively. After about 3 to 4 minutes, the garlic will turn a pale, translucent gold. That's your cue. The second it starts to brown, pull the pan off the heat.
Common mistake: rushing this step with high heat. The garlic will brown on the outside but stay raw in the center, and the oil will taste scorched. Low and slow is the way.
The Pasta Water Trick
Cook your spaghetti in well-salted water—1 tablespoon of salt per 4 quarts of water. Taste the water; it should be as salty as the sea. The pasta absorbs salt as it cooks, seasoning it from the inside out.
Drain the pasta 1 minute before the package says it's done. It will finish cooking in the skillet. Before you drain, scoop out 1 cup of the starchy pasta water. That starch is what helps the oil and water emulsify into a creamy sauce.