Separate eggs. Beat egg whites and 1 pinch of salt until stiff. Fold in egg yolk. Fold in flour. Heat 1 tsp. oil in a coated pan. Add the egg mixture and sprinkle the cheese over it. Cover and allow to set for approx. 20 minutes over a low heat
Wash the mushrooms, dab dry and cut into slices. Finely chop the onion. Heat 1 tsp. oil. Fry the mushrooms and onion until golden brown. Cut cooked ham into small pieces and fry briefly
Deglaze with 100 ml water, bring to the boil briefly. Stir in stock and binding agent. Season with pepper and possibly some salt. Serve everything. Wash the chives, cut them into small rolls and sprinkle over them