Diplomat Spiral Cake

I can't even remember the first time I made this cake; I just know I was completely terrified that I would ruin the sponge while cutting it or that the spiral wouldn't hold properly. And, believe it or not, the first time it came out a bit crooked, with the cream a little too thin (I think I used all the pudding because I was in a hurry), but it tasted just right for a gathering with relatives, noisy kids, and friends you only see on special occasions. Now, after a few attempts, I can say it's a cake I often make when I have guests or there's an anniversary. Yes, it requires patience, but it's really not as complicated as it seems. And the best part: you can combine it with any fruits you have at home, whether fresh or from a can.

To keep you from getting lost, let me quickly explain how it works before I go into details.

It takes about 2 hours, including cooling the sponge and making the cream, plus decorating, if you move at a leisurely pace. You can get about 12 good slices if you make it for a party. In terms of difficulty, I’d say it's "intermediate," but nothing too complicated—just patience when rolling the sponge and with the cream.

Ingredients, since I always forget them, I note them on the fridge:

For the sponge:
- 5 eggs (the sponge is like a sponge cake, gives volume and holds the spiral)
- 5 tablespoons sugar (enough to be sweet, but not overly so)
- 5 tablespoons oil (to keep the sponge moist)
- 5 tablespoons flour (for structure, obviously)
- 1 teaspoon baking powder (helps it rise nicely)
- grated zest of orange and lemon (for flavor, adds a festive touch)
- a little vanilla essence (so the sponge isn't bland)

For the cream:
- 500 ml liquid cream (about one large tub, don’t imitate, as it doesn’t whip)
- 1 packet vanilla pudding (plus 500 ml milk and 4 tablespoons sugar, to make the pudding)
- 2 bananas (for sweetness and texture)
- 2 oranges (adds color, a bit tangy)
- 1 can of pineapple in syrup (400 g, well-drained)
- 400 g frozen sour cherries (I prefer them tart, well-drained, instead of kiwi)
- rum essence (pairs well with the fruits)
- (optional) 1 packet gelatin, if you want a firmer cream

For decoration:
- whipped cream (to cover the cake)
- coconut flakes (for appearance)
- glazed cherries and oranges (for the top and edges)
- melted chocolate (if you feel like making a design on top)

Steps, because I get lost without a clear list:

1. Start with the sponge. Preheat the oven to 180°C (don’t set it to maximum, as it burns quickly). Separate the eggs, putting the egg whites in a large bowl and beating them with a pinch of salt until stiff peaks form. Halfway through, add the sugar to make it serious, and continue until the meringue holds well and doesn’t fall out of the bowl. Beat the yolks separately with the oil; don’t let them sit, or they’ll form a crust, which isn’t pleasant.

2. Pour the yolks over the egg whites, but not all at once to avoid deflating the mixture. I use a spoon to add them, mixing gently with a spatula. Sift the flour mixed with the baking powder over the top in two or three batches, and fold carefully from the bottom up. Don’t stir too hard, or it will deflate. Add the orange and lemon zest and vanilla essence at the end.

3. Line a large baking tray with parchment paper. Pour in the mixture and level it with a spatula. Bake for about 25-30 minutes, no longer. Check with a toothpick to ensure nothing sticks to it. Remove it and let it cool in the tray for about 10-15 minutes, then carefully turn it out onto a new sheet of paper so it doesn’t stick when rolling.

4. While the sponge cools, thaw the cherries in a large sieve to drain well. You can also squeeze the pineapple and oranges to prevent syrup from leaking into the cream; otherwise, it won’t hold. Cut the bananas and other fruits into small cubes.

5. Make the pudding according to the instructions on the packet (milk, sugar), and let it cool completely (otherwise, it will melt the cream). Whip the cream with a mixer—it needs to be cold, or it won’t whip. Take about two-thirds of the cooled pudding and gently fold it into the whipped cream—don’t add all the pudding, or the cream will be too thin and runny. If you have gelatin on hand, this is the moment to hydrate it and incorporate it; it helps with cutting nice slices.

6. Add the drained fruits to the whipped cream-pudding mixture. Add the rum essence to taste, mixing gently so everything doesn’t get crushed. I end up with a cream that’s more about the fruits than the cream, which is how I like it.

7. Once the sponge has cooled completely, cut it into four equal strips lengthwise with a large sharp knife. It’s easier than it seems; just be patient. Spread a layer of cream on each strip, not too much, so it doesn’t overflow but also isn’t dry. Start rolling the first strip slowly lengthwise and place it vertically on a platter to serve as the base of the spiral. Then continue with the others, all spiraling around the first one to achieve that "wow" look when sliced.

8. Cover the entire cake with the remaining cream (save some whipped cream for the top and edges). Decorate the sides with whipped cream and sprinkle coconut flakes to hide any irregularities. If you’re in the mood, make some whipped cream peaks on top and place a cherry or pieces of glazed orange on each. I always let the kids do the decorating; the combinations turn out totally unexpected, but honestly, it’s more fun for us that way. The chocolate design is optional—if you have patience, make a shape on parchment paper and place it on top after it hardens.

Why do I make it often? Because it’s the kind of cake that impresses without costing too much, and even if it doesn’t always have the perfect shape, it always has a homemade taste that everyone enjoys. You can make it with whatever fruits you have in your pantry; it works for birthdays, name days, or simply when you feel like something festive. You can adapt it according to the season—more fresh fruits in summer, canned or frozen in winter.

Tips, variations, and serving ideas

Useful tips:

If your sponge is too thick, it’s hard to roll. Stick to a large baking tray, not a classic round mold. Don’t try to roll the sponge while it’s warm, as it will surely break. Don’t add all the pudding to the cream, and if you use too many juicy fruits, it will "drain" when decorating. When cutting the sponge, use a long knife and be careful with measurements to avoid one strip being thicker than another. The cream must be whipped cold—otherwise, it won’t hold, and you’ll just get frustrated.

Ingredient substitutions:

The fruits can be anything you have—kiwi, peaches, apples, pears, mango, whatever comes to mind, just make sure they’re well-drained. If you want a dairy-free version, you can try using plant-based cream and soy pudding (I haven’t tested this version, but I’ve heard it works). For a gluten-free version: replace the flour with a gluten-free alternative (I’ve done this once; the sponge comes out a bit more fragile, but it works). You can use less sugar if needed, but don’t cut too much, or the cream won’t be sweet enough.

Recipe variations:

Once, I used fruit jam instead of cream and fresh fruits; it turned out a quick roll, but it doesn’t hold the spiral shape as well, being thinner. Some people use mascarpone instead of cream—the cream becomes denser and more filling. If you’re feeling fancy, you can make a light syrup with rum and brush it on the sponge before adding the cream. I’ve also tried adding melted chocolate to the cream, but it slightly alters that classic diplomat taste. For the gelatin version, mix it first with the cooled pudding, then with the cream.

Serving ideas:

It goes well with black tea or plain coffee, not with overly flavored drinks, as you’ll lose the fruit taste. If you want a complete party menu, serve it at the end after something lighter, not after heavy meats. If you have little guests, decorate with fruit figures to avoid adding extra sugar.

Frequently asked questions

My sponge breaks when I roll it—what should I do?
Most likely, it’s either too thick, too warm, or too dry. Let it cool completely, and if you want, you can lightly moisten it with some syrup before rolling. Don’t force it; take it easy.

I don’t have sour cherries; what can I use?
You can use any tart fruit: kiwi, berries, or even finely chopped apples if you sprinkle them with a little lemon juice. It’s important that they’re not too soft or too juicy.

I don’t have liquid cream; can I use tub cream?
I don’t recommend it; tub cream is too airy and deflates immediately; it won’t hold the cream and doesn’t have that homemade taste.

Can I use only fresh fruits?
Yes, just make sure they’re ripe and well-drained. Avoid watermelon, as it releases too much water, and the cream won’t hold.

How do I make the spiral look nice and not crooked?
Don’t stress too much—if you cut the sponge evenly and don’t spread the cream all the way to the edge, you’ll have more control when rolling. Use a wide spatula and start slowly; don’t press down. Even if it turns out a bit crooked, you can cover it up when decorating.

This cake has relatively little sugar for its size, plus you use fresh fruits, not jams or heavy creams. Per slice, let’s say it’s about 300-350 kcal (depending on the fruits and how much cream you use), with about 6-7g of protein, around 15-18g of fat (mostly from the cream), and the rest carbohydrates. As a party dessert, it’s fine; it’s lighter than most butter or chocolate cream cakes. If you cut smaller slices or use plant-based cream, the fat content decreases slightly, but it’s still not a diet dessert. The fruits add some fiber and vitamins, but, well, it’s still cake. At least you get fewer "chemicals" if you don’t complicate things with store-bought decorations.

How to store and reheat

In the fridge, it lasts 3-4 days easily, in a container with a lid or covered with foil to avoid absorbing odors. The cream may firm up in the fridge, and sometimes it actually slices better the next day when it’s fully set. I don’t recommend freezing; the sponge and fruits don’t look great after thawing. Never reheat it in the microwave or oven, as the cream will melt, and the sponge will become gummy. It’s best served cold, straight from the fridge, perhaps after letting it sit outside for 10 minutes so it’s not rock hard. If you notice the fruits releasing juice on the surface, gently wipe it with a paper towel before serving.

For the base, beat the egg whites with a pinch of salt and sugar until foamy; separately, whisk the egg yolks with the oil; gradually add the yolks to the egg whites, then mix in the flour previously combined with baking powder; add the orange and lemon zest and vanilla essence, and bake in a parchment-lined tray for about half an hour. Prepare the cream: thaw the cherries and drain them some time before you start making the cake :) Cut the fruits into cubes and let them drain. Prepare the pudding according to the instructions on the package with 4 tablespoons of sugar and 500 ml of milk, then let it cool. Whip the cream and add part of the pudding - if you add it all, the cream will be a bit too soft - as mine turned out :P, then mix with the fruits and add some rum essence - if you have some gelatin on hand, it can be used to firm up the cream - I didn't have any. After the base has cooled, cut it into equal strips - I got 4 - and spread the fruit cream over and roll it up, then place it on a platter vertically; continue the spiral with the other 3 strips. Cover everything with cream, put whipped cream and coconut flakes on the edges. On top, place the chocolate design, then make some peaks of whipped cream - on each peak, place a cherry, as well as at the base of the cake, and next to Donald, I added pieces of candied orange for a snack in case he gets hungry :P. That's about it: enjoy your meal! We did :) It can be made with any combination of fruits - fresh or canned.

 Ingredients: BASE: 5 eggs 5 tablespoons sugar 5 tablespoons oil 5 tablespoons flour 1 teaspoon baking powder orange and lemon zest vanilla essence CREAM: 500 ml liquid cream 1 packet vanilla pudding (500 ml milk + 4 tablespoons sugar) fruits: 2 bananas, 2 oranges, 1 can of pineapple in syrup 400 g. frozen sour cherries (I was supposed to add kiwi, but since I couldn't find it, I replaced it with sour cherries; the idea was to have something sour and colorful :P ) DECORATION: Edi's friend - the DUCK DONALD made by mom from melted chocolate, applied over a drawing made on baking paper sour cherries and glazed orange whipped cream coconut flakes

 Tags:  diplomat cake