Spaghetti Aglio, Olio e Peperoncino

This is the dish that separates those who understand Italian cooking from those who merely imitate it. Three ingredients. No place to hide. The garlic must be sliced, not pressed, not minced, not crushed through that deplorable device that turns sweet allium into acrid paste. The oil must be extra virgin, the real thing, because you will taste it directly. The chili provides warmth, not fire.

Americans ruin this dish by adding too much garlic. The unbalanced use of garlic is the single greatest cause of failure in would-be Italian cooking. Six cloves for a pound of pasta sounds generous. It is precisely correct. Sliced thin and cooked gently in cool oil, the garlic becomes sweet and golden, releasing its perfume without its harshness.

The technique that matters most is the emulsion. Olive oil and water do not naturally combine. But add starchy pasta water, toss vigorously, and you create something silky that clings to each strand. Without this step, you have greasy pasta with garlic chips. With it, you have a sauce. Simple does not mean easy.