I have in the recipe how to make a white sauce. It provides more than you will need. I suggest you freeze it in ice cube trays, pop them out and secure in freezer bags for future use!
Serving Size: 1 (300) g
Servings Per Recipe: 4
Calories: 706.9
Calories from Fat 203 g 29 %
Total Fat 22.7 g 34 %
Saturated Fat 8.6 g 43 %
Cholesterol 122.6 mg 40 %
Sodium 979.4 mg 40 %
Total Carbohydrate 98.9 g 32 %
Dietary Fiber 8.4 g 33 %
Sugars 5.5 g 21 %
Protein 27 g 53 %