I am a former chef and it is almost like a white sauce or bechemel, when you make the roux (flour and fat), you stir in some stock and wine to make the base sauce once it has thickened then add your cream, to keep it from splitting use heavy cream/whipping, or a light cream with at least 18% butterfat, simmer this and then use it for your pasta, with this sauce you can add cheese, seafood, chicken or vegetables.