Peel and wash the Jerusalem artichoke and potatoes and cook in plenty of salted water for about 15 minutes. Wash the meat and dab dry. Wash sage and pluck leaves from the stalks. Remove some of the skin from the flesh and place 1 leaf under each.
Pin it with wooden skewers. Brush the legs with honey, season with salt and pepper, place on a baking tray lined with baking paper and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see
manufacturer) Fry for 30-35 minutes.
Peel and finely chop the onion. Mix 2 tablespoons of water, vinegar, sugar and onion together. Fold in the oil. Season with salt and pepper. Drain potatoes. Add butter and milk and mash with a potato masher until mashed.
Season to taste with salt and nutmeg.
Wash the salad, shake dry and mix with the vinaigrette. Remove the chicken legs from the oven and arrange on plates with potato and topinambur puree and a little salad. Add the remaining salad.