Clean, wash and cut the peppers into bite-sized pieces. Peel garlic and press it through a garlic press. Wash the fillets and dab dry. Heat oil in a large pan. Brown the fillets and the bell peppers thoroughly.
Season with salt, pepper and garlic. Fry over medium heat for about 12 minutes. In the meantime, chop the olives finely except for a few rings to garnish. Bring the stock to the boil, stir in the olives. Let it boil down for 3 minutes at high heat.
Stir in the crème fraiche. Season to taste with salt and pepper. Serve in portions with fresh marjoram and the olive rings. Serve with fresh white bread.