Roughly dice and puree the eel fillet. Stir in crème fraîche and pickled pepper. Season with lime juice. Hard boil eggs for about 10 minutes. Then peel and chop. Meanwhile peel and finely dice the onion.
Finely dice cucumbers and maties as well. Wash and chop the dill. Mix the prepared ingredients with some lime juice. Place the Rösti-Taler on a baking tray without defrosting. Bake in a preheated oven (electric: 225 ° C/ gas: level 4) for about 12 minutes.
Spread the prepared toppings on top. Serve garnished with fresh herbs and lime.