Crumly Cogwheels Tortilla Soup

Source: Crumly Cogwheels, Houston, Texas (restaurant is now closed)

Adjust the amounts of tortillas, chicken, cheese and avocado to your personal taste.

1 large bunch cilantro, washed well (leaves only)
4 garlic cloves
1small onion, chopped
2 fresh serrano peppers
1(10 ounce) can tomatoes with green chiles
3 quarts chicken stock
1 (8 ounce) can tomato sauce
2 or 3 teaspoons ground cumin
1 to 2 teaspoons salt
2 tablespoons cornstarch, dissolved in a small amount of water
Corn tortillas (about 20), cut into thin strips
Vegetable oil
2 cups shredded grilled or poached chicken breasts (about 2 ounces per serving)
1 to 1 1/2 cups shredded Monterey jack cheese (about 1 ounce per serving)
2 avocados, peeled, pitted and sliced

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