Cook the potatoes in boiling water for about 20 minutes. In the meantime, clean and wash the spring onion and cut into fine rings. Mix vinegar, mustard, honey, 4 tablespoons of oil and 1 pinch each of vanilla and cardamom. Season to taste with salt. Drain potatoes, rinse, peel and chop. Mix potatoes, spring onion and sauce and let it soak for about 1 hour.
Rinse salmon, dab dry and cut into strips of equal length, approx. 1⁄2 cm thin. Spread a thin layer of oil and season with a little Fleur de Sel. Cover with foil.
Lay the salmon strips flat next to each other, arrange the potato salad on top of each 1⁄4 Wash the dill and shake it dry, pluck the flags. Cut cress from the bed. Add cress and dill to the potato salad.
For this dish, the salmon must be super fresh, as it is eaten raw. If the fillet still has a silvery skin or a layer of fat, cut it off carefully
Garnish as you like with edible flowers from your own garden or from the greengrocer