Hi, Ive tried to make a home made alfredo sauce twice now and both times I was unable to get the parmesan cheese to melt and the result was a kind of grainy unpleasant sauce. I melted butter on medium low added cream and brought it up to heat and then slowly whisked in the parmesan and it will not melt. I tried freshly grated cheese and then kraft type pre grated and got the same result. If anyone has any ideas I would really appreciate the help. Thanks