Mexican Tomato Sauce from "The Book of Mexican Foods"
1 tablespoon olive oil
1 small onion, finely chopped
1 garlic clove, finely chopped
1 pound tomatoes, peeled, chopped
1 green chili
1 tablespoon tomato paste
1 teaspoon finely chopped cilantro
salt and pepper
Heat oil in a skillet, add onion and garlic and cook 5 minutes until soft but not brown. Add tomatoes, chili, tomato paste and cilantro; season with salt and pepper.
Simmer 20 minutes or until thick. Remove the chili. For a hotter sauce, chop the chili and return to sauce.