Preheat the oven to 120 °C.
Rhubarb Remove the skin from the rhubarb and rinse. Cut the stalks diagonally into pieces, making sure that the pieces stay in the shape of the stalks. Use a pallet to lift the cut stalks onto a tray with parchment paper. Stir through the maple syrup and lime juice with a pinch of salt, pepper and sugar. Pour the mixture on the rhubarb pieces form and cook the stalks in the heated oven for five to eight minutes.
Rösti Peel the potatoes and cut into narrow strips. Heat the vegetable oil in a coated large frying pan. Season the rösti mixture with a pinch of salt and fry four small rösti. Keep warm in the stove.
Pike perch with spinach In a saucepan, heat the olive oil and steam the spinach in it together with the pressed garlic clove until soft. Remove the bones from the pike-perch fillets, cut the skin side and portion into four pieces. Season the zander fillets with salt and a small pinch of sugar on both sides. Heat the remaining olive oil and butter in a coated frying pan. Roast the pike-perch fillets first on the skin side for two minutes, then turn to the other side. Add the morels to the frying pan, roast everything together for another minute.
Horseradish Pesto Rinse the parsley and pluck the leaves from the stems. Mix spinach, almond flakes, grated parmesan, grated vegetable soup, olive oil, horseradish, salt and pepper with the parsley in the hand