Steps
1. Bring a large pot of salted water to a boil.
2. Add the spaghetti and cook according to package instructions until al dente.
3. While the pasta cooks, in a large bowl, mix the grated Pecorino Romano cheese and freshly ground black pepper.
4. Reserve 1 cup of pasta water, then drain the pasta.
5. Quickly add the hot pasta to the bowl with the cheese and pepper mixture.
6. Toss vigorously, adding reserved pasta water a little at a time until a creamy sauce forms.
7. Adjust with more cheese or pepper to taste.
8. Serve immediately with additional cheese on top if desired.