This is the recipe I use when recipes call for chili sauce. Feel free to adjust the sugar and vinegar to your taste if you like your sauce tangier or sweeter.
To make this recipe nightshade free, replace tomato sauce* with no tomato ketchup, add vinegar and allspice, and then add the brown sugar one tablespoon at a time adjusting to your taste.
1 cup tomato sauce* or no tomato ketchup
1/3 cup of brown sugar
1-1/2 Tbsp vinegar ( I use rice, or apple)
1/4 tsp of allspice
Mix all the ingredients in a saucepan.
Bring to a boil and then let simmer for 10 minutes.
Place in a jar and refrigerate.