To make juice, cook peelings, seeds and peaches in water. Strain to make 3 1/2 cups peach juice. Pour into a large saucepan and add 1 box Sure-Jel. Bring to a hard boil and pour in 4 1/2 cups sugar. Boil about 2 minutes or until 2 drops slide together to make a big drop. Pour into sterilized jars and seal.