1 grapefruit
1 lemon
2 oranges
1 1/2 C sugar per each 1 C of fruit
juice of 1 lemon
Recipe
Slice the fruit almost paper thin, this would be best done on the meat slicer, thin enough that you can almost see through them. Combine with the water and let stand overnight, tightly covered. Heat to boiling and boil hard, uncovered, for 1 hour, shaking pan vigorously from time to time to prevent sticking. This should be done until volume is reduced by half. Add sugar and lemon juice, and cook to the jelly stage, use a candy thermometer or test by dropping a drop of marmalade on to a cold plate. Stir and skim a few minutes. Pack into sterilized jars and process in water bath 15 minutes for pint jars at sea level.