Wash the turkey leg, dab dry and rub with salt and pepper. Place in a roaster, brush with oil and roast in a preheated oven (electric: 200 °C/ gas: level 3) for 1 1/4 hours.
Onions peel and cut into slices. Wash, clean and cut the tomatoes into eighths. Drain corn and cut into thicker pieces. Wash the rosemary, put something aside for garnishing, strip remaining rosemary needles from the stalks and chop them coarsely.
Add vegetables, stock and wine 30 minutes before the end of the frying time. Sprinkle with chopped rosemary. Season vegetables with salt and pepper. Garnish with rosemary. Onion baguette is delicious with it.