Peel the potatoes. Cut the cauliflower and carrot strips, blanch the peas and beans a few minutes in salted water. Save 125 milliliters of broth. Prepare 16 small meatballs from meat, eggs, mustard, boil them until tender. Mix until smooth 6 tablespoons milk and 2 tablespoons flour mix the remaining milk with vegetable broth, bring to a boil, thicken with flour mixture, season, add the vegetables and meatballs and sliced potatoes.