Wash the fish fillet, dab dry and portion. Sprinkle with the juice of a lemon, add a little pepper and salt.
Peel and wash the potatoes, boil them with salt for about 25 minutes, then drain and steam.
Wash the spinach and drain. Peel onion and garlic, finely dice onion, press garlic through the press. Add the spinach in a sufficiently large pot, put the lid on and let the spinach fall together.
Season with salt, pepper and nutmeg, steam for about 8 minutes.
Heat the rest of the butter in a large frying pan, fry the fish naturally ore floury depending on the thickness at medium heat for 4-6 minutes on each side.
Arrange with boiled potatoes and spinach, place fresh zironen slice on the roasted fillet, garnish with tomato and dill. Bon appetit!.