Reduce the cola to about 1/8 liter. This takes about a quarter of an hour, the consistency is then syrupy.
In the meantime, mix the other ingredients in a separate container and add the spices to taste. Let the cola cool and stir in the ketchup-spice mixture.
I think the recipe is great for several reasons:
With maybe one or two exceptions, you have the ingredients in the house anyway. The preparation is quick and easy, and the result tastes great - at least for my family.
Tip:
If you don`t have smoked salt, you can use normal salt and a little garlic. Tastes different, but also very tasty.