Three Fruit Marmalade - cooking recipe

Ingredients

3 lb. mixed citrus fruit or 3 grapefruit, 3 oranges and 3 lemons
twice that amount or 6 lb. sugar

Preparation

Wash fruit well.
Dry and peel very thinly.
Cut the peel into shreds.
Holding fruit over a bowl to catch the juice, cut off the pith and remove the seeds, tying them in cheesecloth bag, then slice the fruit thinly.
Measure the fruit and juice and put in a large bowl with 3 times quantity of cold water, the pith and seeds and the shredded fruit.
Let stand for 24 hours.