Mix cherries, puree, pectin and lemon juice in a large saucepan.

Bring to a boil over high heat, stirring constantly.

Add sugar all at once and stir until dissolved. Return to a rolling boil. Boil hard for one full minute, stirring constantly.
Remove from heat. Skim foam.

Ladle hot into hot jars, leaving 1/4″ headspace. Wipe jar rims carefully. Cap. Process for 10 minutes in a boiling water bath.