Roast Duckling In Wine

• 2 stuffing (optional)
• 1 wine
• 1 seedless green grapes
• 1,500 gr duckling
• 1,300 gr ducklin after
• 180 ml marsala wine
• 12 gr grape jelly
• 4 gr cornstarch
• 3 gr kosher salt
• 1 gr nutmeg