Alla Gricia: The Roman Pasta That Predates Both Tomato and Egg

Bring a large pot of lightly salted water to a boil. (Go lighter on salt than usual — guanciale and Pecorino are both aggressively salty.)

Cut guanciale into lardons roughly 1 cm thick and 3 cm long.

Place guanciale in a cold, dry pan — no oil. Set heat to medium-low. Render slowly for 8–10 minutes, turning occasionally, until the fat is fully liquid and the meat is golden but not yet crisp. Do not rush this on high heat.

Remove guanciale with a slotted spoon and set aside. Leave every drop of rendered fat in the pan. Remove pan from heat.

Finely grate Pecorino Romano and crack black pepper generously. Set both aside.

Cook spaghetti until about 2 minutes short of the package's al dente time.

Before draining, reserve a full ladle (about 200 ml) of pasta water. This is non-negotiable — you cannot substitute plain water.

Drain pasta. Return the guanciale pan to medium heat. Add 100 ml of the reserved pasta water and stir to combine with the fat into an emulsion.

Add drained spaghetti to the pan and toss for 1–2 minutes until the pasta finishes cooking in the sauce. Add more pasta water in small splashes if it looks dry.

Remove pan from heat entirely. Wait 30 seconds. Add three-quarters of the Pecorino and toss constantly for 1 minute — the residual heat will melt it into a glossy coat. Add pasta water by the tablespoon as needed to keep the sauce fluid.

Return guanciale to the pan. Add cracked pepper and toss once more.

Plate immediately. Finish with remaining Pecorino and an extra crack of pepper. Serve at once.