- Wash, dry, halve, and remove seeds from kumquats. Cover the fruit with about ¼ their volume of sugar and let stand in the refrigerator overnight or for several days. Process in food processor in batches. Cook in large saucepan until desired consistency is reached. Adding more sugar makes the mixture thicker and sweeter.
- Place in sterile jars and process in hot water bath for 15 min.
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