Pour cider, cranberry juice cocktail and lemon juice into a large saucepot.
Stir in pectin.
Bring to a rolling boil.
Add sugar and return to a rolling boil.
Boil hard 1 minute.
Remove from heat.
Skim foam if necessary.
Pour hot into hot sterilized jars, leaving '/4-inch head space.
Process 5 minutes in boiling water bath