Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/4  cup           vegetable stock
   1      teaspoon      olive oil
   1      cup           onion -- chopped
     1/3  cup           green bell pepper -- chopped
   1      teaspoon      garlic -- minced
   1 1/2  cups          tomatillos -- peel & chop
   1      teaspoon      cumin
   2      tablespoons   jalapenos -- chopped
   1      tablespoon    white vinegar
     1/4  cup           cilantro leaves -- chopped

Preparation:

Heat the stock in a large and heavy skillet over medium-high heat. Sauté onion, bell pepper and garlic until soft. Add tomatillos and cumin and Sauté for 10 minutes. Add remaining ingredients and Sauté a further 3 minutes. Serve warm.