Peel and finely chop the onion. Knead minced meat, egg and onion. Season strongly with salt, paprika and pepper. Form small balls from the minced meat. Boil 200 millilitres of salted water.
Add the vegetables and cook over a low heat for 10 to 15 minutes, stirring continuously. In the meantime, heat oil in a pan and fry the meatballs briefly all around. Heat the fat in a saucepan. Sauté the flour in it. Deglaze with the vegetable water and milk. Bring everything to the boil while stirring. Add the meatballs and cook on low heat for five minutes. Add the vegetables. Season to taste with lemon juice, salt and pepper. Wash and chop the parsley.
Bring everything to the boil while stirring. Add the meatballs and cook on low heat for five minutes. Add the vegetables. Season to taste with lemon juice, salt and pepper. Wash and chop the parsley. Pour over the Leipziger Allerlei and serve. Tastes good with mashed potatoes