Sweet Cherry Jam

Put cherries into saucepan and add sugar. Bring the mixture to a full rolling boil and add 1 package of powdered pectin. Return to a rolling boil, and boil 1 minute longer. Remove from heat and skim off any foam with a spoon. Ladle into sterilized canning jars filling to within 1/8 inch of tops. Wipe jar rims and threads. Cover with flat lids then screw bands tightly. Process in a water bath for 10 minutes.