Boil quail eggs in boiling water for about 3 minutes until soft and eggs for about 3 minutes until hard. Quench, peel. Sort the spinach, clean the radishes. Wash both and the tomatoes. Drain everything well. Halve the tomatoes and cut the radishes into slices.
Whisk 3 tablespoons of vinegar, salt, pepper and a little sugar.
Add oil. Mix mayonnaise, crème fraîche, mustard and 2 tablespoons vinegar.
Mix spinach, tomatoes, radishes and clear marinade. Arrange on plates. Cut the eggs in half or into slices and spread on top. Garnish with mustard mayonnaise. Wash the cress, cut from the bed and sprinkle over the top.