Canning cream sauces
by Phil Kennard
Is it ok to can my home made potato soup and Alfredo sauce?
Unfortunately the USDA states: "Do not add noodles or other pasta, rice, flour, cream, milk or other thickening agents to home canned soups"
Since I assume your potato soup or alfredo sauce will have cream or milk and be thickened I can't recommend it as safe.
However what you can do with the potato soup anyway is go ahead and can it without the dairy and then just add cream or whatever when you cook it to eat it.