onion in two large kettles. Bring to a boil; reduce heat, and simmer, uncovered, 45 minutes, stirring frequently. Remove from heat; put tomato mixture through a food mill or sieve, reserving tomato juice. Set aside. Tie cinnamon sticks, cloves, and garlic in a cheesecloth bag; add to vinegar in a small saucepan. Bring to a boil; reduce heat, and simmer, uncovered, 30 minutes. Remove spice bag; set spiced vinegar aside.

Cook reserved tomato juice, uncovered, in a large kettle over medium-high heat 2 hours or until volume is reduced by half, stirring frequently. Add vinegar and remaining ingredients. Cook, uncovered, 30 to 40 minutes or until thickened. Quickly pour hot mixture into hot jars, leaving 1/2-inch headspace. Remove air bubbles; wipe jar rims. Cover at once with metal lids, and screw on bands. Process in boiling-water bath 20 minutes. Yield: 6 pints.