Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      tablespoon    olive oil
   1      medium        onion -- fine chopped
   2      cloves        garlic -- chopped
   3                    tomatoes -- peeled and seeded
     1/2  teaspoon      sugar
   2                    chiles serranos -- chopped
   1      teaspoon      salt
   1      tablespoon    freshly ground black pepper
   1      tablespoon    cilantro -- chopped

Preparation:

Fry the onions and garlic until limp. Add remaining ingredients except cilantro and cook gently, 15 minutes. Add cilantro and cook 1-2 minutes more. Serve hot or cold. Makes 2 cups.