Defrost the pollack fillets. Cook deep-frozen fish soup ingredients in boiling salted water for about 20 minutes, then drain. In the meantime cut the peppers into strips, olives into rings. Peel and finely chop onion and garlic. Sprinkle pollock with lemon juice, season with salt and turn in flour. Heat the fat.
Fry the pollack in it until golden brown on each side. Add olive oil. Fry the bell peppers, onions and fish soup ingredients for approx. 5 minutes, turning carefully. Season again with salt, pepper, dried tarragon, lemon juice and zest. Serve garnished with fresh herbs and lemon. White bread tastes good with it