Whiskey Marmalade UK Style as requested.
1.4 kg (3lb) Seville Oranges
Juice of 2 lemons
2.8 litres (5pints) water
2.7 kg (6lb) sugar.
Generous 1/4 cup whiskey
Wash and dry fruit. Cut in 1/2 and squeeze the juice out. Place the pips in a muslin bag and tie them safely inside.
Slice and shred the oranges or coarsely chop in a food processor.
Put in a pan along with lemon juice, water and pips. Bring to boil and simmer gently until the peel is really soft. This will take about 11/2 -2hrs. Don't add the lemon skins because they take a lot longer to soften than orange skins.
Lift out the pips, squeezing them against the side of the pan with a wooden spoon. Remove from the heat and add the sugar and stir until it is all dissolved. Return to the heat and boil rapidly for 15-35 minutes
Test for setting by placing a drop of juice onto a cold saucer/plate and allow to cool. Gently push the drop with your finger and if a "skin" creases ahead of your finger while sliding into the drop then setting is more or less reached. I have noted that the boiling action becomes more syrupy as setting time is reached. It remains a bit of trial and error but you can always re boil the marmalade to reduce the liquid a bit.
Remove from the heat and sterilise your jars before filling with the cooled, (not cold) marmalade.
Enjoy
Viv AKA stitchingcrazy