The New Zealand Railways Magazine, Volume 8, Issue 7 (November 1, 1933)
Marmalade
Marmalade.
New Zealand grapefruit, 3; sweet oranges, 3; lemons, 3; sugar; water.
Slice fruit thinly. To each cup of shredded fruit allow three cups of water, and stand for twenty-four hours. Boil for ten minutes, and stand another twenty-four hours. To one cup of pulp add one cup of sugar. Boil quickly until it jellies when tested on a saucer, about an hour.