Light Vegetable Soup With Pistachio Pistou

Name: Light Vegetable Soup With Pistachio Pistou
Ingredients: 2 quarts of water; 1/4 cup tomato paste; 3 large carrots, thickly sliced; 3 medium onions, coarsely chopped; Two 2-inch wedges of green cabbage (about 6 ounces); 2 celery ribs, coarsely chopped; Trimmed stems from 1 fennel bulb; 6 thyme sprigs; 4 large garlic cloves, smashed; Salt; 2 medium carrots, thinly sliced; 1 medium parsnip, cut into 1/4-inch dice; 1 large fennel bulb, stems trimmed, bulb halved, cored and thinly sliced lengthwise; 1 medium onion, minced; 1 small zucchini, cut into 1/4-inch dice; 4 plum tomatoes, cut into 1/2-inch dice; Salt and freshly ground pepper; Pistachio Pistou; Shavings from one 2-ounce piece of Parmesan cheese