it's pretty easy marmalade recipe, and yes, brightspark, a lovely colour...

don't know how to download, so will just type up

1.5lb red or pink grapefruit

juice and pips of 2 lemons

1.5 pts water

8oz cranberries (fresh or frozen)

3lb granulated sugar

wash, halve and then quarter the grapefruit then slice very thinly (into thin wedges), removing the pips and reserving them and obviously adding any juice that runs out. Tie up the grapefruit and lemon pips in a muslin bag and put in large pan with grapefruit slices, lemon juice and water. Cover and simmer gently for around 2 hrs. (until you can squish the grapefruit rind esily with a wooden spoon).

Remove muslin bag, leave to cool slightly then squeeze over the pan. Add the cranberries, bring back to boil and simmer for another 15 to 20 mins till berries have popped and softened.

Add sugar and stir over low heat until fully disolved. Bring to boil and boil rapidly for about 10 mins (or until setting point)

leave to cool for 5-10 mins (skim off scum if you want to, I never bother - seems a waste) then stir and pot up into warm sterlised jars, seal immediately. - Makes about 5 lb