Soak bread crumbs in milk for 5 minutes in a large mixing bowl. Add beef, pork, eggs, onion, 1 1/2 tsp. salt, allspice, nutmeg, cardamom, and pepper. Mix well. Shape into 1 inch balls.
Place on broiler pan and bake for 15 minutes at 400 degrees F degrees. Place browned meatballs in crockpot. Add 1/2 the beef broth, and remaining salt. Cover; cook on low 4-6 hours or on high 2-3 hours.
Turn crockpot to high. Combine butter and flour to make a smooth paste. Add paste to remaining beef broth and pour into crockpot. Cook until thickened, about 45 minutes. Stir in the cream and heat through.
666 calories, 54 grams fat, 11 grams carbohydrates, 32 grams proteinper serving. This recipe is low in carbs.