Instructions

  1. Heat a cast iron skillet over high heat.
  2. Grill tomatillos,jalapnos, onion and garlic in skillet, occasionally turning to toast all side, for about 5 minutes.
  3. ingredients will blacken in places (this is a good thing).
  4. Remove from skillet and put into a blender, add cilantro and puree until smooth.
  5. Heat 1 vegetable oil in a deep saucepan over medium heat.
  6. Pouyr puree into pan and cook, stirring constantly, until it darkens in color, about 5 minutes.
  7. Add chicken stock, season with salt and pepper, and lower heat to medium low.
  8. Cook, stirring occasionally, until sauce thickens, about 30 minutes.