You can also sub in blood oranges. Can you show how to make orange marmalade less bitter? Because the pectin that makes marmalade gel comes from the pith, which is also the bitter part of the ...

Replace lemon juice with Seville orange juice in savoury marinades, butters and sauces. Or wrap Seville orange pips and pith in muslin and use to add extra pectin to jellies and jams.