Clean and wash the salad and tear it into pieces. Wash, clean and slice the cucumber. Wash and halve the tomatoes. Mix vinegar, 2 tablespoons water and 1 tablespoon oil, season with salt and pepper.
Mix lettuce, cucumber and tomatoes with the vinaigrette. Bring 500 ml of water to the boil, remove from the stove. Leave to cool for 1 minute, stir in the puree flakes. Keep warm. Whisk eggs and 6 tablespoons of water, season with salt and pepper.
Clean, clean and slice the mushrooms. Heat 1 tablespoon of oil in a coated pan. Fry the mushrooms in it while turning. Pour eggs over them and push them together with a spatula until they stick.
Arrange mashed potatoes, scrambled eggs and salad on plates. Sprinkle with chives.