| 1 |
Melt butter in heavy large pot over medium-high heat. Add leeks, parsnips, and apples. Cover; cook until vegetables begin to soften, stirring often, about 20 minutes. Add 4 cups water. Bring to boil. Reduce heat to medium. Simmer uncovered until vegetables are very tender, about 20 minutes. Cool slightly. |
| 2 |
Working in batches, puree vegetable mixture with milk in blender until smooth, thinning soup with more water if desired. Return soup to pot. Season soup with sugar, salt, and pepper. |
| 3 |
Cut enough reserved green parts of leeks into matchstick-size strips to measure 1 cup. Cook in medium saucpean of boiling water until tender, about 10 minutes. Drain. |
| 4 |
Bring soup to simmer. Ladle into bowls. Garnish with leek stips and serve. |
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