For the shiitake omelet, briefly wash the dried shiitake and soak for about 2 hours and drain well. Cut the mushrooms into small pieces and steam them in a pan with butter for about 5 minutes until soft, season with a little salt and pepper.
Beat the eggs, season with salt, pour over the steamed mushrooms and let them set. Finally, sprinkle the shiitake omelet with the chives cut into small rolls and serve.