Sopa Seca de Fideo with Tomatillos

INGREDIENTS:

3/4 pound tomatillos (about 6 medium sized), husks removed
1 to 2 serrano chiles
1/4 medium onion
1 clove garlic
2 Tbsp chopped fresh cilantro, plus extra for garnish
4 Tbsp vegetable oil, divided
4 ounces fresh Mexican chorizo, casing removed, crumbled
8 ounces capellini, or angel hair pasta, broken into 1 to 1 1/2-inch pieces
1 teaspoon sea salt
Freshly ground black pepper
2 1/2 cups chicken stock
4 ounces goat cheese, crumbled
1 avocado, seeded, peeled, diced
Crema fresca or sour cream

Method:
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1: Place the tomatillos, serrano chiles, an quarter onion on a baking sheet lightly greased with vegetable oil. Broil for about 15 minutes until somewhat charred and blistered. Remove the stems from the serranos.
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2: Working in batches if necessary, purée the chiles, tomatillos, onion, a clove of garlic, and 2 Tbsp of the chopped cilantro in a blender, making sure not to fill the blender more than halfway. Once blended you should have about a cup of sauce.
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3: Heat 2 Tbsp of oil in a large saucepan on medium heat. Add the chorizo and cook 3 to 4 minutes until cooked through and crispy. Use a wooden spoon to crumble up the chorizo as it cooks.  Use a slotted spoon to remove the chorizo to a paper-towel lined plate, keeping the fat and oil in the pan.
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4: Place the broken up dry pasta into the pan and increase the heat to medium high. Lightly brown the dry noodles in the chorizo oil. Remove the pasta from the pan and set aside.
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5: Add the remaining 2 Tbsp of oil to the pan and heat on medium high heat. Add the tomatillo sauce and the salt. The sauce should bubble up from the heat of the pan. Cook for about a minute, allowing the sauce to reduce by about a quarter cup. Dragging your spoon through the sauce should leave a trail for a second or two.
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6: Add the pasta back to the pan with the tomatillo sauce and cook it until it has absorbed the liquid. Then add the chicken stock. Bring to a boil and reduce to a simmer. Let cook undisturbed for about 15 minutes, or until the pasta is soft and the stock absorbed. The pasta will be past "al dente" but shouldn't be cooked to a mush.