Grind, process or puree the tomatoes, onions, and peppers in a blender or food processor, working in batches.
Pour the mixture into a large pot. Add vinegar, sugar, salt and mustard. Put allspice, cloves, pepper and cinnamon into a clothbag or cheesecloth. Add to the pan.
Bring mixture to a boil over medium heat. Reduce heat to slow and simmer, uncovered, for an hour or until the volume is reduced by half, stirring often.
Cook until the consistency and flavor is where you want.
Remove spice bag and ladle the ketchup into hot jars, leaving 1/2" headspace.
Wipe rims of jars and add hot lids/rings. Process in water bath for 10 minutes.
Makes 2-4 pints