Taco Bell hot sauce is made from the following ingredients:
Water, Tomato Paste, Jalapeno Peppers, Vinegar, Salt, Spices,
Dehydrated Onions, Xanthum Gum, Sodium Benzoate, and Natural Flavor.
Now I think we can rule out water, but somehow, the other ingredients
clean pennies.
Looking at the tiny amounts of Xanthum Gum, Sodium Benzoate, and Natural
Flavor,
I'm going to rule those out too.
That leaves the following things to create the copper cleaning action:
Tomato Paste, Jalapeno Peppers, Vinegar, Salt, Spices, and Dehydrated
Onions
