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1
Preheat the oven to 375F (190C).
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2
In a large enameled cast-iron pot, combine the chicken skins, carrot, celery, onion, rosemary, garlic, salt, bay leaves, and 1/4 cup (60 ml) of the water.
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3
Place in the oven and cook, uncovered, for 2 hours, stirring and flipping the chicken skins occasionally.
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4
After the 2 hours, the skins should look like the skin of a roasted chicken.
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5
Drain off the fat and add the remaining water and the wine to the pot.
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6
Return the pot to the oven, lower the temperature to 300F (150C), and cook for 1 hour.
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7
Remove from the oven, strain, and serve right away or cool and refrigerate or later use.
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8
It will keep in the fridge for up to a week, or a month in the freezer.