Bring 2.5 liters of water to the boil. When the water is boiling, add 1 tablespoon of salt.
Add the pasta and cook one minute less than the package instructions. We are aiming for that perfect al dente, not-too-soft, not-too-firm texture.
While the pasta is cooking, melt the butter in a non-stick saucepan over medium heat. We want the butter to be melted, not burnt, so keep an eye on it. When ready, turn the heat off.
Once the pasta is perfectly cooked al dente, reserve 2 cups of the starchy pasta water and set it aside.
Drain the cooked fettuccine in a colander and add it to the golden melted butter in the pan. Turn on the heat again on medium heat.
Add the freshly grated Parmesan cheese and stir everything up with the tongues until you've got a smooth and glossy coating.
If the sauce is not creamy enough, gradually add some of the reserved pasta water, until you reach the desired consistency. Make sure each noodle gets a generous coating of that Parmesan goodness!
If you add less cheese, add some more salt to taste.
Serve immediately, topping with more freshly grated Parmesan cheese and freshly ground black pepper (optional) to taste. Enjoy!