Ninfa's Green Sauce

3 medium sized green tomatoes, coarsely chopped
4 tomatillos, cleaned and chopped
1 to 2 jalapenos, stemmed and coarsely chopped
3 small garlic cloves
3 medium-sized ripe avocados
4 sprigs cilantro
1 teaspoon salt
1 1/2 cups imitation sour cream

Combine chopped tomoatoes, tomatillos, jalapenos and garlic in a
saucepan. Bring to a boil (tomatoes provide all the liquid), reduce
heat and simmer 10 to 15 minutes or until tomatoes are soft. Remove
from heat and let cool slightly.

Peel, pit and slice avocados; set aside. Place tomato mixture with
part of the avocados (do this in batches), cilantro and salt in
food processor and process until smooth. Turn into a large bowl.
Stir in sour cream, cover with plastic wrap and refrigerate. Serve
with tortilla chips.

