Combine tomatoes, onions, bell peppers, and salt in a large bowl. Let stand overnight.
Drain the mixture and add hot chile peppers, vinegar, sugar, and horseradish.
Wrap the cinnamon, allspice, and cloves in a cheesecloth or porous bag, and add to the mixture.
Boil the mixture for 15 minutes, or until tender.
Pack tightly in sterilized jars and seal.
Store the jars in a cool, dark place for at least two weeks to allow the flavors to mingle. Store unopened for up to a year. Refrigerate after opening.
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