Ruby Grapefruit Marmalade For Food In Jars

In January The Food In Jars Mastery Challenge was for marmalade. As I only make use of seasonal ingredients I could not take part. As soon as winter arrived I knew I would make ruby grapefruit marmalade. This has the perfect level of tartness one expects from marmalade.

Ruby Grapefruit Marmalade
Ruby Grapefruit Marmalade
Head straight on to the Recipe For Ruby Grapefruit Marmalade ♥

One of the gifts Dave and I received when we got married was a hat box. When I took the wrapping paper off, I was most confused by this present. The hatbox itself was wrapped in the same colour material that my bridesmaids wore. And inside was the invitation we had sent to the people who gave us this gift. She had also strewn some rose petals in the box. I read the card and we were told to keep our memories safe in the box. I started by putting in the lavender sugar paste flowers that topped our cake. And I added the negatives of our wedding photographs. Yes, we got married before digital cameras ;). A couple of months after we got married Dave’s father passed away. I placed the memorial pamphlet from his funeral into the box. These have sadly been added to over the years.

Today’s inspiration ♥ Recipe For Ruby Grapefruit Marmalade ♥ can be found on Lavender and Lime Share on X

Each overseas trip means a collection of photographs which I have put onto flash drives for safe keeping. Together with the cards from our wedding, and special birthdays, the box is quite full. And with time the outer material cover has become dirty. Not being able to wash it, I decided to replace the box with a new one. It is the sentiment that counts and not the gift itself. In it is everything important other than our passports that I would grab in case of a fire. Knowing that all our memories are stored in one place makes me feel secure that we could salvage something if disaster ever struck. You never know when something can happen that will change everything forever. There is no segueing into my ruby grapefruit marmalade from this. The post was inspired by reading about people’s experiences after the Knysna fires.

Ruby Grapefruit Marmalade

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5 from 2 votes

Ruby Grapefruit Marmalade

This marmalade has the perfect level of tartness and is packed full of rind
Recipe Category: Marmalade
Makes enough for: 1 batch marmalade
All Rights Reserved: Adapted from Preserve page 49


  • 4 ruby grapefruits
  • 2 unwaxed lemons
  • 500 mls water, plus extra if needed
  • 500 g fructose


  • Peel the rind off the grapefruit and lemons and place into a blender
  • Chop finely and set aside
  • Quarter the grapefruit and halve the lemons
  • Place into the blender in batches and roughly chop
  • Put the pulp into a large sauce pan and add the water
  • Over a high temperature, bring to the boil
  • Reduce the temperature and simmer for 45 minutes
  • Drain the pulp through a fine sieve, leaving it to drip for 30 minutes *
  • Using the back of a spoon, press the juice out of the pulp
  • Discard the pulp and measure the juice
  • Top up to 500mls if necessary with water **
  • Return to a clean sauce pan and add the rinds
  • Cover and simmer over a low temperature for 15 minutes
  • Add the fructose and stir until dissolved
  • Increase the temperature and bring to a boil
  • Leave uncovered to boil for at least 10 minutes so that you achieve a set temperature of 105° Celsius
  • Remove from the heat, carefully skim off any scum and leave to stand for 15 minutes
  • Pour into a sterilized glass jar and leave to cool completely before placing the lid on the jar
  • Can be stored unopened for 12 months - refrigerate once opened


* I did this in batches so as to not overfill my strainer
** I used grapefruit juice as I had some to hand
Take a look at what was previously posted on Lavender and Lime on July 10:

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20 thoughts on “Ruby Grapefruit Marmalade For Food In Jars

  1. Thanks for the recipe! My boyfriend likes lemon and grapefruit jam, so am going to make the effort to try this recipe!

  2. A lovely post, Tandy. My Mother loves marmalade so I intend to try this with her. I love this gift idea. I have a suitcase with all my memories in it. It is stuffed full of art made by my boys over the years and other things about their childhoods I have collected.

  3. 5 stars
    I haven’t tried grapefruit marmalade! I usually make cumquat marmalade from my tree but I’d love to try something different. This fruit is such a beautiful colour, it looks lovely.

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