- 2 limes
- 2 oranges
- 1 lemon
- 1 small grapefruit
- 3 cups water
- 8 cups granulated sugar
Wash and halve fruit; cut of ends and remove and discard seeds and ends. Using sharp knife, cut fruit into paper thin pieces 1 inch long. Put in large heavy stainless pot, add water and bring to a boil. Cover and boil gently for 45 minutes or until the peel is tender.
Gradually add sugar. Stir until sugar is dissolved and fruit returns to a boil. Stir frequently and boil uncovered until fruit reaches gel stage.
Sterilize jam jars. Fill with hot mixture leaving ¼ inch space at top, wipe rims clean and cover with canning lids that have been boiled for 5 minutes. Apply screw rings and fingertip tighten. Process in boiling water for 5 minutes. Remove from water, let cool and stand for 24 hours.