01 -
Wash 6 half-pint jars, lids, and rings. Keep jars hot in simmering water while you make the jam.
02 -
Pulse cranberries and orange sections in a food processor until coarsely chopped. Add strawberries, orange zest, cinnamon, allspice, and cloves, then pulse until finely chopped but not pureed.
03 -
Transfer the fruit mixture to a large heavy pot. Stir in water and powdered pectin. Bring to a full rolling boil over high heat, stirring often.
04 -
Add all the sugar at once and stir until dissolved. Return to a hard rolling boil and boil for 1 full minute, stirring constantly.
05 -
Remove from heat and skim foam if needed. Ladle hot jam into hot jars, leaving 1/4-inch headspace. Wipe rims, add lids, and tighten bands fingertip-tight.
06 -
Process jars in a boiling water bath for 10 minutes, adjusting for altitude if needed. Turn off heat, rest jars in the water for 5 minutes, then move to a towel-lined counter for 24 hours.
07 -
Check seals after 24 hours. Store sealed jars in a cool, dark place. Refrigerate any unsealed jars and use within 3-4 weeks.