Once your beef has browned (After 5 minutes of cooking), add your tomato paste, erythritol, bay leaf, half chicken bouillon cube, water, paprika, salt and garlic. Stir and let your sauce cook for 7-8 minutes or until it starts to thicken. Add your heavy cream and lower the heat to low. Let your sauce gently simmer for 20 minutes or until it reduces to the consistency you like. I like my sauce a little thicker than most.