Prepare rice in boiling salted water according to package instructions. Peel and chop the onion. Knead minced meat, breadcrumbs, onion, egg, mustard and 2 tablespoons of water. Season with salt and pepper. Form about 20 meatballs. Heat 2 tablespoons of oil in a frying pan, fry the meatballs in it for about 5 minutes and keep warm. Peel kohlrabi and cut into sticks.
Wash 4 fine kohlrabi leaves and cut into strips. Cook the kohlrabi in boiling salted water for about 5 minutes. Stir soup powder into 400 ml boiling water and cook for 2 minutes at low heat. Drain rice and kohlrabi and arrange on plates with the meatballs. Pour sauce over vegetables and meatballs. Garnish rice with kohlrabi leaves. Sprinkle the sauce with coarse pepper and garnish with a basil leaf