Boil 4 eggs in boiling water for about 10 minutes until hard. Meanwhile peel onion and cut into fine cubes. Knead minced meat, mustard, onion and 1 egg to a smooth mixture. Season with salt and pepper
Rinse and peel the eggs cold. Divide the mince into 4 portions, form into balls and fill with prepared eggs. Put them on a baking tray spread with oil. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 20 minutes
Clean, wash and slice the radishes, except for 4 pieces for garnishing. Wash, clean and slice the cucumber. Season 2 tablespoons of vinegar with salt and pepper, fold in oil. Marinate the radish and cucumber in the vinegar
Wash the herbs, shake dry, pluck leaves from the stems and cut from the bed. Cut chives into fine rolls, chop cress and parsley finely. Mix yoghurt, sour cream and herbs and season to taste with salt, pepper and 1 tbsp vinegar. Arrange meat loaf with herb dip and salad on plates