this is what i came up with i use it on kababs.

chilli sweet sauce

1 cup suger
1/4 cup cider vinegar
1/4 cup water
1/2 cup tomato ketchup
1/3 tsp chilli powder (hot) add more if you want more heat.

put suger, vinegar, water and chilli in to a pan bring to the boil and simmer for 5 minutes. then add the ketchup and simmer for 1 minute stirring all the time.
let cool and serve hot or use it cold it's YUM
the amount of chilli used gives a lovely warm heat to the mouth.