4 1/2 qt. water
1 1/2 c. thinly sliced grape fruit rind
1/2 c. thinly sliced orange rind
1 1/2 c. chopped grapefruit sections
3/4 c. chopped orange sections
1/2 c. thinly sliced lemon
About 2 1/4 c. sugar

Combine 1 1/2 quart water and rinds in Dutch oven. Bring to boil. Boil, uncovered, 5 minutes; drain and repeat. Combine 1 1/2 quart water, rind, chopped fruit and lemon; bring to a boil. Boil 5 minutes. Cover and let stand in cool place 12-15 hours. Uncover and bring mixture to boil and boil 35-40 minutes.

Measure amount of fruit and liquid; add 1 cup sugar per 1 cup fruit and liquid. Stir well. Bring mixture to a boil and boil until mixture registers 220 degrees on candy thermometer, stirring frequently. Pour marmalade into jars. Process in boiling water bath 10 minutes.