Use this with Huevos Rancheros.

2 tablespoons olive oil
2 tablespoons jalape? chiles, seeded and minced
1/2 cup onion, chopped
2 cups tomatoes, chopped
2 teaspoons vinegar
1/4 teaspoon ground black pepper
Light beef broth or water

Heat olive oil, then add chiles and onion; cook until they begin to soften, but do not allow them to brown.

Add remaining ingredients except for water or broth and cook, stirring frequently, for 1/2 hour over very low heat.

Add just enough broth or water to make the sauce a little soupy and continue cooking an additional 10 minutes. The sauce should be thick enough to coat a spoon without immediately running off, so add more liquid or cook a while longer, as necessary.

Yields enough to serve 4 with chips or with a meal.