Ladle hot jam into jars, leaving 1/2-inch space at top of jar. Cover with lids. Using tongs, carefully place jars in pot of boiling water (jars should be covered with at least 1 inch of water). Return to boiling; boil 10 minutes to process. Using tongs, remove jars from water and place on cooling rack. When cool, press center on top of each lid to ensure it is sealed. If jar is sealed, the lid will not move up or down. Store opened jam in refrigerator.