1 (8 ounce) can of tomato sauce
1/3 cup water
1/4 teaspoon chili powder
1 1/2 teaspoon ground cumin
1 1/2 teaspoons dry onion flakes
1 tablespoon white vinegar
1/2 teaspoon garlic powder
1/2 teaspoon garlic salt
1/4 teaspoon paprika
1/4 teaspoon white sugar
1/8 teaspoon cayenne
Mix everything and simmer (on very low) for 15-20 minutes. Serve hot. The "spice level" is very moderate if you use it right away. It is spicier if you let it sit in the fridge overnight.
Serve (as a hot condiment) with any Mexican food.
NOTE: I was surprised to see that there is vinegar in this sauce (you can't taste it in the final product).