Grapefruit cake

Grapefruit cake
A moist, triple grapefruit cake: zest, juice and syrup.
3,221 2 1 4
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Last modified on: March 24th 2024

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For 4 people, you will need:

Change to the quantities for: 2 people 4 people 8 people 12 people
How long does it take?
Time required for this recipe:
PreparationCookingStart to finish
30 min.50 min.1 hour 20 min.
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Step by step recipe

Stage 1 - 5 min.
Grapefruit cake

Grapefruit cake batter

Zest 1 grapefruit into 200 g caster sugar, and whisk well.

Cover with a plate, and leave to rest for 1 hour. We do this to capture the grapefruit aromas in the sugar.

Note: You can make this the day before, and leave it to rest in the fridge overnight.

Stage 2 - 2 min.
Grapefruit cake
Squeeze the grapefruit and set the juice aside.

Stage 3 - 5 min.
Grapefruit cake
Melt 70 g butter over low heat, then remove from heat and allow to cool.

Stage 4 - 2 min.
Grapefruit cake
In a bowl, sift together 200 g flour and 6 g baking powder, then set aside.

Stage 5 - 5 min.
Grapefruit cake
In the bowl of a mixer, pour 3 eggs, 3 tablespoons grapefruit juice, and 100 g liquid cream.

Add the sugar + zest, and whisk until smooth and frothy.

Stage 6 - 3 min.
Grapefruit cake
Gradually add the flour + baking powder mixture.

Stage 7 - 3 min.
Grapefruit cake
Finish by gently pouring in the cooled melted butter.

Stage 8
Grapefruit cake
The mixture should be well blended.

Stage 9 - 2 min.
Grapefruit cake
Pour into a buttered cake tin.

If possible, leave to rest in the fridge for 1 hour.

Stage 10 - 5 min.
Grapefruit cake

Grapefruit syrup

Preheat oven to 180°C (360°F).

Pour 50 g water and 75 g caster sugar into a small saucepan, bring to the boil and stir well.

Stage 11 - 1 min.
Grapefruit cake
Remove from the heat, add the rest of the grapefruit juice and stir.

Your syrup is now ready, cover it while you wait.

Stage 12 - 2 min.
Grapefruit cake


If you want a nice opening when baking, slit the top of your cake like this.

Stage 13 - 40 min.
Grapefruit cake
Bake for around 30 to 40 minutes at 180°C (360°F), checking 5 minutes before the end to be sure.

Stage 14 - 5 min.
Grapefruit cake
Turn out the warm cake onto a wire rack set on a plate, and drizzle with the grapefruit syrup.

Collect the excess syrup on the plate, and pour it over the cake several times, or better still, brush the syrup over the cake.

Stage 15
Grapefruit cake
Leave to cool before serving.
You can add 1 or 2 tablespoons of rum to the grapefruit syrup, to taste.

The cream can easily be replaced by mascarpone.
1 or 2 days in the fridge, protected by cling film.
Home made.
Nutritional information
Whole recipe
Energetic valueProteins CarbohydratesFats
2,964 Kcal or 12,410 Kj42 gr459 gr107 gr
148 %16 %43 %16 %
Per 100 g
Energetic valueProteins CarbohydratesFats
249 Kcal or 1,043 Kj4 gr39 gr9 gr
12 %1 %4 %1 %
Per person
Energetic valueProteins CarbohydratesFats
741 Kcal or 3,102 Kj11 gr115 gr27 gr
37 %4 %11 %4 %
% are calculated relative to a Recommended Dietary Intake or RDI of 2000 k-calories or 8400 k-joules by day for a woman (change to a man).
Possible allergens in this recipe: Milk, Gluten, Egg
How much will it cost?
  • For 4 people : 2.33 €
  • Per person : 0.58 €

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Note: Be careful, these prices are only an estimate, you can consult the table of prices by ingredients used for this estimate.
This recipe uses (among others)
FlourFlour: You can get more informations, or check-out other recipes which use it, for example: Sesame cookies, Apple and almond cake, Soft apple cookies, Chocolate mug cake, Parmesan cauliflower cheese, ... All
Caster sugarCaster sugar: You can get more informations, or check-out other recipes which use it, for example: Dublin fruit scones, Mascarpone fondant with two lemons, Clafoutis "Marie-Antoinette", Ramekins with almonds, apples and lemon, Elsa's Comtoise galette, ... All
Liquid creamLiquid cream: You can get more informations, or check-out other recipes which use it, for example: Flamiche, Eggs en Cocotte à la Française, Smoked eggs, Lemon creams, Pistachio ice cream, ... All
ButterButter: You can get more informations, or check-out other recipes which use it, for example: Pesto crackers, Eggs Arsène, Citrus tart, Potato and broccoli gratin, Hearty leek and sprout soup, ... All
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Your 2 comments or questions on this recipe
  • Yes, you can find some tips and informations about zesting on this page : how to zest a fruit?
    Posted by jh march 24th 2024 at 17:30 (n° 2)
  • This looks like a cake I will make and thank you for the recipe. As for the slit in the top, this happens to my cakes naturally! I use the convection oven inside the microwave and this is always the result. At least they look "home made" when I gift them which is nice. Do you have any comments on the preparation of fruit you wish to zest? I wonder sometimes it I'm zesting chemicals but don't want to scrub too hard.
    Posted by Anonymous march 24th 2024 at 16:33 (n° 1)
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