Fettuccine Alfredo

Method

1. 1Grate the Parmesan and prepare everything first. This dish moves very fast once the pasta is cooked — there is no time to grate cheese or measure anything. Use a microplane or the finest side of a box grater to grate the Parmesan into a light, fluffy pile. Coarse grating will not melt properly into the sauce. Set it in a bowl. Cut the butter into cubes and leave at room temperature — cold butter from the fridge will cool down the pasta too quickly and prevent emulsification. Have a large warm serving bowl or the pan you will finish the pasta in ready.
2. 2Cook the pasta. Bring a large pot of water to a boil. Salt lightly — less than you would for most pasta, because the Parmesan will add significant salt to the final dish. Cook fresh fettuccine for 2 to 3 minutes until just al dente. For dried: cook 1 minute less than the package. One minute before draining, reserve at least 200 ml of pasta water and let it sit for 1 to 2 minutes — you want it hot but not at full boiling temperature. Around 70°C (160°F) is ideal. At full boil the proteins in the cheese will seize.
3. 3Build the sauce. Place the room-temperature butter in the warm serving bowl or pan. Drain the pasta and immediately transfer it to the butter using tongs — do not shake it dry, you want some starchy water still clinging to the noodles. The heat of the pasta will melt the butter. Toss quickly. Add the finely grated Parmesan in two or three additions, tossing constantly between each. After the first addition, add a small splash of the reserved pasta water — a tablespoon or two — and toss vigorously.
4. 4Emulsify. This is the critical step: toss and fold continuously, adding pasta water a tiny splash at a time, until the cheese and butter have emulsified with the pasta water into a glossy, creamy sauce that coats every strand. The sauce should look silky and flow slightly when the bowl is tilted — not wet and soupy, not thick and clumped. If it looks clumped, it is either too hot or needs more pasta water. If it looks watery, it needs more tossing. Work quickly — the pasta cools fast and the window for a perfect sauce is narrow.
5. 5Serve immediately. Divide between two warmed bowls. Finish with a crack of black pepper if desired and a small amount of extra Parmigiano grated at the table. Fettuccine Alfredo waits for no one: as the pasta cools, the sauce sets and the noodles clump. Eat it the moment it is made. If it tightens before you serve, a splash of hot pasta water and thirty seconds of vigorous tossing will revive it.