Have you try Onion Marmalade with Roasted Duck Skin.
3 large sweet yellow onions
1 tablespoon brown sugar
1 teaspoon Apple Vinegar
1/2 cup red wine
Heat 2 slices of unsalted butter into frying pan over medium heat.
Add the sliced sweet onion and salt and cook until softened.
Stir in the brown sugar and cook further for one to two minutes.
Add the apple vinegar and red wine and cook until almost evaporated.
You can keep the balanced of the onion marmalade in the refrigerator overnight.
Just wrap these onion marmalade with a piece of crispy duck skin over a crepe and served immediately.
Check out this link for more duckilicious dishes.