When given a massive bag of citrus fruit, including ruby grapefruit, I decided to try my hand at making marmalade. I didn’t bother to look at how others made their marmalade; instead, I just went ahead and cooked it up just like I would a jam. However, I was aware that marmalade has the skin of the fruit in it. Because the pith of grapefruit is so bitter, I decided to peel the zest of the grapefruit before cutting away the pith and chopping the fruit (make sure to collect all the juice). I then sliced the zest very finely and added it to the fruit with sugar.
Grapefruit is sometimes referred to as a superfood because they are high in fibre, low in calories, and a good Vitamin C source.
Ruby grapefruit has a lovely blush colour and is a little sweeter than ‘white’ grapefruit, making this the perfect fruit for grapefruit marmalade. My ruby grapefruit marmalade has been a hit with friends and family. Let me know in the comments below if you use this recipe and how you liked it.
Want more jam recipes? Try my Fig Jam Recipe & Chilli Jam
Ruby Grapefruit Marmalade
Ingredients
- 1 kg Ruby grapefruit
- 1 Lemon
- 550 g White sugar
Instructions
- Wash the fruit thoroughly.
- Using a vegetable peeler, peel the fruit, including the lemon, then finely julienne the skin. Add to the cooking pot.
- Cut the ends off the fruit. Then, working with one piece of fruit at a time, remove the white pith with a paring knife. Hold the fruit over a pot as you do this to catch all the fruit juice.
- Chop the fruit. Put the fruit and all the juice into the pot, and add the sugar.
- Put the pot on low heat and stir until the sugar dissolves. Then, increase the heat to medium/hot and boil the fruit.
- Cook, stirring frequently, for about 45 minutes. You can test if your marmalade is ready by testing it on a plate chilled in the freezer. If it’s firm, it is ready. Note that the marmalade will thicken when chilled.
- Prepare the preserving jars by boiling them in a large pot for 10 minutes. Ladle or pour the marmalade into the hot jars. Clean the rims thoroughly and seal them with the lids.
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