Heat 1 tablespoon oil in a saucepan over medium heat
Add 1 tablespoon flour and stir for 1 minute
Add 2 tablespoons chili powder
Add 1 teaspoon cumin
Add 1 teaspoon paprika
Add 1/2 teaspoon garlic powder
Add 1/2 teaspoon onion powder
Add 1/4 teaspoon salt
Add 1/4 teaspoon black pepper
Stir in 1 cup tomato sauce
Add 1 cup water
Add 1 tablespoon vinegar
Add 1 teaspoon sugar
Simmer for 10 to 15 minutes, stirring occasionally
Adjust seasoning to taste
Remove from heat and cool slightly before serving