Clean and wash the cucumbers, cut them in half lengthwise and remove the seeds with a teaspoon. Peel, wash and chop the potatoes and cook in boiling salted water for about 20 minutes. Dice bacon
Heat 1 tablespoon of oil in a frying pan. Fry the bacon for 2-3 minutes until crispy, remove approx. 1/4 bacon and set aside. Add cucumbers to the remaining bacon, season with salt and braise covered for about 15 minutes
Wash the fish, dab dry, turn in flour. Heat 2 tablespoons of oil in a frying pan. Fry the fish for 6-7 minutes while turning, finally season with salt and pepper. Wash the dill and shake dry. Pluck and chop flags
Pour cream and fish stock into the cucumbers, bring to the boil, thicken with sauce thickener, season with salt, pepper, sugar and lemon juice. Drain the potatoes, put them back into the pot with the dill, swing them through, arrange them on plates with fish, braised cucumbers and lemon wedges, sprinkle with the remaining bacon