Blueberry Jam Boiling

Success in Canning Jams Tips

  1. Check rims of jars for imperfections.
  2. Use new lids.
  3. Exact measurement of fruit.
  4. Exact measurement of sugar.
  5. Follow pectin instructions; we use powdered Sure-Jell.
  6. Add Pectin.
  7. Bring to hard rolling boil.
  8. Add sugar.
  9. Bring to hard rolling boil.
  10. Hard rolling boil for 60 seconds.
  11. Correct headspace (1/4 inch for jams).
  12. Wipe rims.
  13. Tighten rings properly (snugly but not with excessive force).
  14. Correct processing time.
  15. Remove and let cool, do not adjust rings.
  16. Some jams take up to 2 weeks to set.
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Blueberry Jam Boiling