Peel, wash and dice the potatoes. Clean, wash and cut broccoli into small florets. Fish wash, dab dry, cut into pieces of about 4 cm. Sprinkle with lemon juice, season with salt, turn slightly in flour. Heat 1 teaspoon of oil.
Fry the fish for about 5 minutes while turning. Heat 1 teaspoon of oil in another pan. Fry the potatoes all around. Season with salt and pepper. Add broccoli and fry briefly. Add broth, simmer for 3 minutes. Wash the herbs. Chop the dill, cut the chives into small rolls. Stir herbs and mustard into the stock. Stir in milk and crème légère.
Wash the herbs. Chop the dill, cut the chives into small rolls. Stir herbs and mustard into the stock. Stir in milk and crème légère. Add sauce thickener, bring to the boil again. Heat the fish pieces in it. Serve in portions garnished with lemon and fresh herbs