Wash the herbs, shake dry and chop finely. Mix corn and wheat flour, baking powder and 1 teaspoon salt. Knead with eggs, milk and herbs to a smooth dough. On one with Backpap
Bake in the preheated oven (electric oven: 175 °C/circulating air: 150 °C/gas: level 2) for 35-40 minutes. Remove from oven and let cool off.
Clean, wash and dry arugula. Rinse fish, dab dry. Steam in hot butter for about 3 minutes on each side. Season with salt and pepper.
Cut the flat cake in half crosswise once, then cut it open. Spread the lower halves with eggplant puree, the upper halves with tapenade. Cover the lower halves with rocket salad and drained paprika. Spread the fish on top, put the lids back on top.
Cut each half into 4 cake pieces.