·1 lb fettuccine
·8 tbsp unsalted butter cold, cubed
·2 cups Parmigiano-Reggiano finely grated
·1 cup pasta water reserved
·Salt and white pepper
·Fresh parsley optional
1.Cook pasta in heavily salted water. Reserve 1.5 cups water.
2.Add cold butter to a wide pan. Add 1/2 cup pasta water.
3.Add drained pasta and toss vigorously over medium-low heat.
4.Add parmesan gradually with more pasta water, tossing constantly.
5.The sauce should cling and coat every strand.
6.Season and serve immediately in warmed bowls.