Wanted to make this non-dairy and therefore I used soy milk and substituted the half-and-half with coconut milk. Did not use the sugar, I think the soy milk is a little sweeter than normal milk. Decreased the oil to 2 tbs (which was sufficient) and added a dash of red pepper flakes. The sauce is real creamy and has a very nice taste and heat. It even goes well as a spaghetti sauce! And, indeed, it freezes well. Thanks for posting. Made for My-3-Chefs, November 2009.