Spin dry lettuce that has been washed and picked into bite-sized pieces and distribute decoratively on 4 plates. Peel the mango, cut into strips and add to the salad.
Cut the sheep`s cheese into not too small cubes. Whisk the egg, turn the sheep`s cheese cubes in it, then in the ground hazelnuts. Fry the cubes in a little oil or butter over low heat until the hazelnuts have taken on a little color. Also put on the salad.
Mix the vinegar, oil, the herbs and possibly 1 teaspoon tarragon mustard (if it goes well with the other herbs) into a sauce and serve the salad with it.