For the salad, wash the potatoes and cook in water for about 20 minutes. In the meantime, boil 2 eggs hard. Drain potatoes and eggs, rinse and peel. Cut potatoes into slices and let them cool down.
Cut the gherkins into slices. Mix 6 tbsp. remoulade, mustard, vinegar and gherkin stock. Season to taste with salt and pepper. Dice eggs. Mix all salad ingredients.
For the fish, put cornflakes in a freezer bag. Seal the bag well. Finely crumble the cornflakes with a pastry roll. Wash the fish, dab dry and cut into approx. 3 cm wide strips. Season with salt and pepper. Whisk 2 eggs in a deep plate. Turn the fish one after the other in flour, egg and cornflakes.
Heat clarified butter in a frying pan. Fry the fish in it in portions on each side for about 3 minutes until crispy. Serve with the rest of the remoulade.