Creamy Chile Con Queso - cooking recipe

Ingredients

1/3 cup oil (author recommends soybean- other veg oils don't do as well)
1/2 cup finely chopped onion
1 garlic, chopped
1 tablespoon flour
3/4 cup evaporated milk
3/4 cup chopped red-ripe tomatoes
1 lb process American cheese, cut in cubes
1/4 cup grated sharp cheddar cheese
1/4 cup grated monterey jack cheese
1/4 cup finely minced jalapeno chili with juice (pickled or fresh, to taste)

Preparation

Heat oil in pan.
Add onion and garlic and cook until onion is clear and stir in flour.
Gradually stir in evaporated milk and cook until mixture is thickened.
Stir in tomato, cheeses, and jalapenos.
Cook, stirring, about 5 minute or until cheeses are melted.