No better combination can be secured than oranges and pineapple. To make marmalade, both fruits are cut into small pieces and then cooked in a thick sirup.
Wash the oranges, cut skins and all into small pieces, remove the seeds, and boil slowly in the water until the skins are soft. Prepare the pineapples by peeling them, removing the eyes, and then shredding or cutting into very small pieces. Add the pineapple to the orange, stir in sugar, and continue to boil until the juice is at the jelly stage. Pour into hot sterilized glasses, cool, seal, and label.
Woman's Institute Library of Cookery, Volume 5.