Kansas City is known for its combination of tomatoes, molasses, honey, vinegar, and spices for a tangy jar of wonderful. This is Bill's take, not too sweet, not to spicy and vaguely mirrors Bill's pork shoulder spices.
Combine all the ingredients in a saucepan over medium and heat gently. Reduce the mixture by half (takes about 15-20 minutes or about an hour when using passata).
Refrigerate after using. Use or discard within a couple of weeks.
Please note that the quantities can be changed by entering the amount you wish in the quantity indicator. However, the metric will not change.
For our Swedish readers, I've included the suggested substitutes for the USA ingredients in the recipe.