Melt butter in pan and add cream while stirring. Add cheese while stirring constantly. Add in spices and garlic. Allow to simmer but continue stirring, add egg yolk (can beat with milk or cream to keep from cooking egg too fast) last and allow to simmer for another 3-5 minutes. Keep stirring!

If adding shrimp to Alfredo sauce - season shrimp with blackened seasoning and garlic salt. Cook shrimp in hot oiled skillet till almost done. They will cook the rest of the way when you add to the sauce after adding the egg but before the last simmer. Add some green onion and tomato to sauce as well. Keep stirring! Top with some more Parmesan. Bon a petite!