Some cakes transport you somewhere else from the very first bite. For me, this orange and lemon cake with kumquats is one of them. It smells a little like an Italian bakery, a little like a hot afternoon among ripening citrus fruit, and a little like home baking in the middle of winter, when I miss the sunshine most.
I love citrus cakes, but for years I had one problem: most of them tasted too mild. The aroma faded during baking, or I was left with just a faint hint of orange in the background. So I started experimenting with whole fruit, boiled and blended with the peel. The result was exactly what I had been looking for: an intense, deep flavour, a distinct citrus freshness and a moist texture that lasts for several days after baking.
This cake is quite different from a classic sponge cake. It has a denser, moist texture and a wonderfully rich aroma. The kumquats on top add a slightly exotic touch and make even a simple slice look like a dessert from a good café.
Why Do I Boil the Oranges and Lemon?
Many people are surprised that I put the fruit into the saucepan whole. Yet this is precisely the step that gives the cake its special character. Boiling softens the peel, mellows its bitterness and produces a smooth, fragrant pulp.
It follows a similar principle to one of my favourite citrus bakes, my lemon cake. I use fruit pulp there too, because it gives a much more intense flavour than juice or flavouring alone.
In this cake, oranges and lemon create a lovely balance. The oranges bring sweetness and a deep aroma, while the lemon adds freshness and a gentle tang. This keeps the cake from tasting bland or feeling overly heavy.
Ingredients
- 300 g orange and lemon pulp
(made by blending 2 boiled oranges and 1 boiled lemon, with the seeds removed) - 4 eggs
- 220 g sugar
- 200 ml vegetable oil
- 250 g plain wheat flour
- 1½ teaspoons baking powder
- a pinch of salt
To finish:
- lemon icing
- kumquat slices for decoration
How I Prepare the Citrus Pulp
I wash the oranges and lemon very thoroughly. This matters because I use the whole fruit, including the peel. Then I boil them for about 20 minutes. Once they have cooled, I remove the seeds and blend everything into a smooth, thick pulp.
Even at this stage, the kitchen smells wonderful. The aroma reminds me partly of orange marmalade and partly of homemade citrus preserves.
Making the Cake
I beat the eggs with the sugar until pale and very fluffy. This step is worth taking time over, because well-aerated eggs help create the cake’s texture.
Next, I add the oil in a thin stream, mixing continuously. This keeps the mixture light and smooth.
I add the orange and lemon pulp to the mixture. At this point, the batter takes on a rich colour and begins to smell like a bakery full of citrus treats.
I sift the flour with the baking powder and a pinch of salt. I add the dry ingredients gradually and mix just until combined.
I pour the batter into a tin lined with baking paper or greased with butter.
I bake the cake at 170–175°C for about 50–60 minutes, until a skewer inserted into the centre comes out clean.
Kumquats – Small Fruit, Big Aroma
Kumquats are a perfect match for this cake. They have an intense, slightly bitter flavour and a very aromatic peel. Interestingly, unlike many other citrus fruits, kumquats are eaten with the peel on.
The slices are wonderfully decorative. Once I arrange them on the icing, the cake looks like something from the window of an elegant patisserie.
These are the kinds of finishing touches I enjoy: natural, eye-catching and a great match for the flavour of the cake.
What Is This Cake Like?
Above all, it is very moist. The oil and fruit pulp help it stay fresh for a long time. Even the next day, it remains soft and fragrant.
The flavour is distinctly citrusy without being overly sour. It has more of a fresh, bittersweet note, reminiscent of good orange preserves, than the flavour of a classic lemon cake.
I love serving it with coffee or Earl Grey tea. In summer, it is also delicious chilled in the fridge.
Citrus and Moist Cakes – A Perfect Match
I have long noticed that cakes made with vegetables or fruit pulp have a much more interesting texture than traditional dry butter cakes. That is also why I enjoy carrot cake so much: the vegetables help it stay soft and fragrant for a long time.
The same applies to my seasonal rhubarb crumble cake. The fruit brings moisture, lightness and a natural tang that traditional cakes often lack.
Here, the orange and lemon pulp plays that role. It makes every bite intense, moist and full of flavour.
Would I Make It Again?
Absolutely. This is one of those cakes that tastes even better with time. After a few hours, the flavours mingle more deeply and the icing gently soaks into the citrus crumb.
For me, it is the perfect bake when I want something more distinctive than a simple vanilla cake or a classic bundt cake. It smells of freshness, sunshine and ripening fruit. And the kumquat slices on top make even an ordinary slice look like a little work of art. 🍊🍋