Turkey Mulligatawny Soup with Coriander

I'm always looking for wonderful ways to use leftover turkey. This is a great soup recipe from Gourmet Magazine! Soup's on!

• Ready In: 1 hr
• Serves: 10

Ingredients

• 1  turkey carcass, broken into large pieces
• 4 1⁄2 quarts water
• 1⁄3 cup water
• 4  cloves garlic
• 3  pieces  peeled  fresh gingerroot (1-inch cubes)
• 1⁄4 cup  vegetable oil
• 2  tablespoons curry powder
• 3⁄4 teaspoon ground cumin
• 2  large boiling potatoes (about 1 pound total)
• 4  cups  chopped onions
• 3  carrots, sliced
• 1  cup canned unsweetened coconut milk (available at Asian markets, specialty foods shops, and some supermarkets)
• 1⁄4 cup fresh lime juice
• 1⁄3 cup  finely chopped fresh coriander
•  coriander sprig (to garnish)

Directions

1. In a large kettle or stockpot combine the carcass with 4 1/2 quarts of the water, or enough to cover it, and simmer the mixture, uncovered, for 3 hours.
2. Strain the stock through a large sieve into a large bowl, return it to the kettle, and boil it until it is reduced to about 10 cups.
3. In a blender purée the garlic and the gingerroot with the remaining 1/3 cup water.
4. In a heavy kettle heat the oil over moderately high heat until it is hot but not smoking and in it cook the purée, stirring, for 2 minutes, or until the liquid is evaporated.
5. Add the potatoes, peeled and cut into cubes, the onion, the carrots, and 5 cups of the stock and simmer the mixture, covered, for 30 minutes, or until the vegetables are very soft.
6. In the blender purée the mixture it batches until it is smooth, transfering it as it is puréed to another large kettle.
7. Stir in the remaining stock, the coconut milk, the lime juice, and salt to taste, simmer the soup for 10 minutes, and stir in the chopped coriander.
8. The soup may be made 2 days in advance, cooled completely, uncovered, and kept covered and chilled.
9. The soup keeps, covered and frozen, for 2 months.
10. Serve the soup garnished with coriander sprigs.
11. Makes about 14 cups, serving 10.