Four Fruit Marmalade

Here is a simple way to make about 6 kg (13 lb) of four fruit marmalade with 33% fruit and 55% added sugar.

Scrub fruit thoroughly in warm water to clean and remove most wax
Remove peel from lemon, grapefruit and oranges and mince it
Add minced peel to water and simmer for an hour
Thoroughly liquidise all remaining fruit including pips and pith
Add liquidised fruit and sugar to hot simmered peel without draining it
Boil rapidly to 106 degrees Centigrade and check setting
The weight of marmalade produced by this method is about 3 times the weight of fruit used