1 – Instead of using the sausage you can use the minced pork. If you make the recipe with heavy cream, you shouldn’t need to thicken this Alfredo sauce. There are 90 calories in 1/4 cup (61 g) of Ragu Classic Alfredo Pasta Sauce. Ingredients. When the cream comes to a simmer, the water content evaporates, leaving a deliciously thick sauce … : Calorie breakdown: 86% fat, 10% carbs, 5% protein. To prepare a good ragù How to Thicken Alfredo Sauce. Heavy cream contains at least 36% butterfat (as compared to milk’s 3.5% and half-and-half’s 12%). 1 jar Alfredo sauce; 1/2 cup Parmesan cheese, grated; 1 cup Liquid (use EITHER: (a) milk, cream or dairy alternative OR (b) chicken stock or broth)