PROVENçAL VEGETABLE SOUP (SOUPE AU PISTOU)

Provençal Vegetable Soup (Soupe au Pistou) image

Provided by Ruth Cousineau

Yield Makes 6 servings

Number Of Ingredients 22

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For soup:
1 large leek (white and pale green parts only), washed and thinly sliced (2 cups)
1 celery rib, cut into 1/2-inch pieces
1 large carrot, cut into 1/2-inch pieces
1 garlic clove, finely chopped
1 large thyme sprig
2 tablespoons extra-virgin olive oil
1/2 pound boiling potatoes, peeled and cut into 1/2-inch pieces
1/2 pound Swiss chard, stems cut into 1/2-inch pieces and leaves coarsely chopped
8 cups water
2 cups thawed frozen edamame (fresh soybeans)
1/2 pound zucchini, cut into 1/2-inch pieces
1/4 pound green beans, trimmed and cut into 1-inch pieces
3/4 cup medium pasta shells
For pistou:
1 small tomato
1 cup packed basil leaves
1/2 cup packed flat-leaf parsley leaves
2 garlic cloves, finely chopped
2 tablespoons extra-virgin olive oil
1 cup coarsely grated Gruyère (3 ounces)
Accompaniment: grilled baguette slices brushed with olive oil

Steps:

Make soup:
Cook leek, celery, carrot, garlic, and thyme sprig in oil with 1/2 teaspoon salt and 1/4 teaspoon pepper in a 5-to 6-quart heavy pot over medium heat, stirring occasionally, until vegetables brown and stick to bottom of pot, 10 to 15 minutes.
Add potatoes and chard stems with 1/2 teaspoon salt and cook, stirring occasionally, until beginning to soften, about 5 minutes. Add water and bring to a boil, stirring and scraping up brown bits.
Stir in edamame, zucchini, green beans, pasta, chard leaves, and 1/4 tsp salt and simmer, uncovered, until pasta is al dente and vegetables are tender, about 10 minutes. Discard thyme sprig.
Meanwhile make pistou:
Heat a dry small skillet (not nonstick) over medium heat until hot, then char tomato on all sides. Core tomato, then purée with basil, parsley, and garlic in a food processor. Add oil and cheese and blend well.
Remove soup from heat and stir in half of pistou and salt and pepper to taste. Serve soup with remaining pistou.