Ingredients

  • Large stockpot or canning kettle
  • Jar rack or cake cooling rack (for holding filled jars off the floor of the pot
  • 6 (8-ounce) Mason style preserving jars with lids and bands
  • Wide mouth canning funnel (technically optional, practically indispensable)
  • Canning tongs (specially made for snatching jars in and out of very hot situations
  • Large (8-ounce) ladle
  • Paper towels or dishtowels
  • Magnetized "lid-wand" or magnet tool from hardware store (optional, but how else you gonna get hold of those darned lids)
  • Medium-large saucepan
  • Wooden spoon
  • Hand masher
  • Nutmeg grater (optional)
  • 2 (12-ounce) bags frozen blueberries
  • One (1 3/4-ounce) packet dry pectin
  • 1/4 teaspoon star anise, ground fine
  • 10 to 20 grinds fresh nutmeg (or 1/4 teaspoon pre-ground)
  • 2 tablespoons lemon juice
  • 5 tablespoons (2 1/2 ounces) cider vinegar
  • 3 cups sugar
  • 1/2 cup water

Method

  • For the jam: Place blueberries in saucepan over medium-low heat.
  • Sprinkle with pectin followed by the anise, nutmeg, lemon juice and vinegar.
  • Once liquid starts to gather in bottom of pan, increase the heat to high and bring to a boil.
  • Lower heat slightly and boil gently for five minutes occasionally mashing mixture.
  • Mash in sugar, add the water and return to a boil for 1 minute.
  • You just made jam.
  • Cool, jar, refrigerate and enjoy within 2 weeks.
  • Or, move to the preserving phase.
  • Preserving the jam: Thoroughly wash all hardware in hot soapy water.
  • Then pile everything (excluding the jar lids) into the pot.
  • Cover with hot water by at least 1-inch and bring to a boil and maintain for 10 full minutes to sterilize.
  • Turn off the heat, wait 5 minutes then add the lids (waiting will insure that the sealing compound does not melt).
  • Leave all hardware in the pot until you're ready to can.
  • Remove the ladle, tongs, funnel and other tools from the pot, (careful please, it's hot in there) to a clean towel or paper towels.
  • Using the jar tongs, remove and drain the jars, placing them on the towel/paper towel surface.
  • (Avoid rock or metal surfaces which could result in thermal shock and breakage.)
  • Place the funnel in the first jar (pick it up by the ring, avoiding the sterile interior.)
  • Use the ladle to fill each jar just to the bottom of the funnel, about 1/3-inch from the bottom of the jar threads.
  • This "headspace" is necessary for the jars to seal during processing.
  • Wipe the jar rims with a moist paper towel, checking for any cracks or irregularities as you go.
  • Use the magnetized device of your choice to position lids on each jar.
  • Screw the rings on finger tight.
  • (Remember, the rings don't seal the jars they only hold the lids in place.
  • Heat will drive out the headspace air, which when cooled will create a vacuum, thus sealing the jars)
  • Return the jars to the pot being certain that they don't touch the bottom of the pot or each other.
  • (If you don't have a jar rack, try a round cake rack, or metal mesh basket.
  • Even a folded kitchen towel on the pot bottom will do in a pinch.)
  • Add additional water if necessary to cover the jars by at least an inch, and bring to a hard boil over high heat according to the table below.
  • (Be sure not to start your timer until a true boil is reached.
  • The headroom air may bubble out of the jars before a boil is reached.
  • Don't be fooled.)
  • Processing times: Within 1,000 feet of sea level: 5 minutes 1,000 - 3,000 feet above sea level: 10 minutes 3,001- 6,000 feet above sea level: 15 minutes 6,000 - 8,000 feet above sea level: 20 minutes Above 8,000 feet: wait until you're back down at base camp.