Pit & chop cherries. Add next three ingredients. Bring to boil & cook for 10 minutes, stirring frequently. Add raspberries & sugar. Bring to a boil, stirring frequently. Boil to jam stage (15 minutes or so). Remove from heat, stir & skim for 5 minutes. Pour into hot, sterile jars & seal.
from Agriculture Canada, "Jams, Jellies and Other Preserves"
