Liquid Cement This Is The Formula For Setting Up Jam Or Jellies That Did Not "Set" For 8 cups of un-jelled recipe: Place the un-jelled mixture in a saucepan Add 1/2 cup, granulated sugar Bring to a boil, stirring constantly Then add: 1/2 cup, lemon juice 1/2 cup, liquid pectin (such as Certo) Return the mixture to a boil Boil for 4 minutes only Pour into freshly washed, sterilized hot jars Seal with lid or wax