3 lbs. plums
1 1/2 to 2 c. water
3 lbs. sugar

Wash and stone fruit and put into a saucepan with water. (Under ripe fruit requires more water then ripe fruit.) Cook over low heat until plums are soft. Add sugar and cook, stirring constantly until sugar is dissolved. Bring to a boil and boil rapidly until jam reaches setting point. Pour into warm sterilized jars and seal immediately.