Try this grapefruit recipe then check out our classic marmalade recipe.

olive’s cookery writer Adam says… “Traditionally, marmalade is made with the intensely zesty, bitter oranges from Seville, which are in season in a brief window from mid-December to mid-February. The rules, however – as with jam-making – remain the same, so feel free to experiment with whatever kind of citrus fruit marmalade you like."


  • 1kg (about 3-4) pink grapefruits
  • 1kg preserving sugar
  • 1kg golden caster sugar
  • 1 lemon, juiced


  • STEP 1

    Cut all the grapefruits in half and squeeze the juice from each through a fine sieve into a bowl and reserve, keeping any pips. Cut the grapefruit halves again into quarters and, if the pith is very thick, carefully remove some until the rind is ½cm-1cm thick. Put any trimmed pith and pips into a clean muslin cloth and seal tightly with string or a rubber band to make a bag.

  • STEP 2

    Slice the remaining grapefruit rind into 1-2mm slices. Put the sliced rind and muslin into a large pan with 1.5 litres of water, bring to the boil and simmer very gently for 2 hours until nearly all of the water has evaporated.

  • STEP 3

    Remove the muslin bag from the pan and use a pair of tongs to squeeze out the pectin-rich liquid back into the pan with the rind. Put a small clean plate in the freezer.

  • STEP 4

    Pour the sugars and the reserved grapefruit juice into the pan and bring back to a gentle simmer to dissolve the sugar. Put a sugar thermometer into the pan, turn up the heat and boil for 15-20 minutes, stirring regularly to avoid it catching, until it reaches 105C.

  • STEP 5

    Remove the plate from the freezer and spoon a little of the marmalade onto the plate. Gently push the marmalade with the back of a spoon – if it’s at the right setting point, a rippled skin will appear on the top. If no ripple appears, return the plate to the freezer, boil the marmalade for another 5 minutes, then try again. Repeat until necessary.

  • STEP 6

    Stir the lemon juice through the marmalade and pour into sterilised jars and seal. It will keep in the fridge for 6 months.

Use your marmalade in one of our marmalade recipes

Gooey Flapjack Recipe with Marzipan

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