Combine all ingredients in a stainless steel stockpot, stirring well. Bring mixture to a boil. Reduce heat; simmer, uncovered, until mixture thickens, stirring occasionally.
Quickly ladle relish into hot sterilized jars, leaving 1/2-inch head space. Remove air bubbles. Cover with metal lids, and screw bands tight. Process in boiling water bath 15 minutes.