Wash and sort the grapes. Peel and finely dice the shallot. Heat 1 tsp. oil in a pot. Sauté the shallot in it. Add sauerkraut, bay leaf, grapes and wine, cover and stew for 10-15 minutes. Season to taste with salt, pepper and a little sugar
In the meantime, wash the fish, pat dry and season with salt. Cut the skin several times. Heat 1 tsp. oil in a small, coated pan. Place the fish in the pan with the skin side down and fry over high heat for about 4 minutes. Turn the fish over and cook over low heat for 1-2 minutes. Arrange the ragweed and fish fillet, garnish with marjoram if desired