Roasted Peking Duck with Peaches

• 2 Peking ducks, weighing 1 kg each
• 2 tbl butter

Remove the necks from the birds and cut them into 4-cm chunks. Brown them in a little butter and simmer them with the vinegar and demi-glace while the ducks are roasting.

Preheat the oven to 240°C/475°F. Place the whole onions and marjoram into the seasoned abdominal cavity of