Restaurant Cookbooks

What is your favorite alfredo sauce recipe?
NOTE: I want answers from people who have actually made alfredo. I'm not looking for people to link me to some online cookbook to recipes they've never made. We're talking from scratch high quality here, like you'd see in a upscale authentic Italian restaurant with great food.
I do have a recipe of my own, I'm just looking for others with experience and things to try to improve.
Real Fettucine Alredo
1 pound fresh fettucine
8 Tbsp. butter
1 cup heavy cream
1 cup freshly grated Parmigginao-Reggiano cheese
Freshly ground black pepper, to taste
Freshly grated nutmeg
As the water for the pasta begins to boil, melt butter in large sauté pan over low heat. Add cream to butter and let it warm.
At the same time, salt the pasta water and cook until al dente. Drain pasta thoroughly, and mix with butter and cream in sauté pan over low heat. Add cheese and toss until sauce thickens slightly. Season with pepper and nutmeg.
Remove from heat and serve immediately with additional cheese on the side.
Serves 4-6
--Parmaggano-Reggino Cheese Cookbook
Secret Restaurant Recipes

