About two years ago, I suddenly craved something sweet on a Saturday evening, but I didn’t want anything ordinary; I was looking for something with a fine mousse, well-whipped cream, and, believe it or not, a splash of rum. I rummaged through my mother’s old recipe book and came across a dessert that resembled a pastry shop cake, but somehow looked more “homemade” and airy. The first time I tried making it, I messed up the batter: I didn’t mix the cocoa well enough, and, as you can guess, the colors turned out all wrong; it didn’t have that checkerboard pattern I had envisioned. No worries, the cake was eaten anyway, but since then, I’ve figured out the trick, and now I find an occasion for it almost weekly, whether it’s for a birthday or when we all gather around the table.
If you decide to make it now, know that it takes about two hours of active time (plus some chilling time for the cream in the fridge, around 2-3 hours, but you don’t have to hover around it). It yields a substantial tray, about 15 decent pieces, enough to serve a family of four and even some guests. It’s not the simplest cake, I warn you, but you don’t need a pastry chef diploma either. I’d say it’s at a medium level, but if you follow the steps and don’t rush, you can’t go wrong.
Why do I keep making it? Because the cake base is moist, not crumbly, it has a light cream with a clear rum flavor (and don’t worry, it’s not strong, just aromatic), and the chocolate glaze… yes, I admit, I always add more than I should. It’s suitable for more formal occasions, but honestly, I love eating it straight from the pan in the evening, with cold coffee on the side. And maybe also because, given how beautiful it looks in the end, you wouldn’t guess how “actually simple” it is. Plus, everyone asks for the recipe.
1. The Cake Base — which is the foundation, and I never want to mess it up
I always start with the eggs. Seven in total, I crack them all and separate the egg whites from the yolks. I put the egg whites in a clean, large bowl and beat them with a mixer, adding a pinch of salt. When I see it starting to foam, I add the sugar, but I don’t pour it all at once; I add it spoon by spoon, just like for meringue. I continue until the bowl can be turned upside down and nothing falls out; that’s how I used to test it at the beginning – now I don’t take that risk, because once I dropped the meringue on the table…
I mix the yolks with the oil, little by little, like for mayonnaise – if you add all the oil at once, it’ll curdle, so be patient to get it shiny and smooth. Then I pour it over the egg whites, and here, don’t go mixing like crazy, or everything will deflate. I fold it gently with a spatula, using broad movements from bottom to top, until it’s somewhat homogeneous.
I mix the flour separately with the baking powder (yes, I know some skip this, but for me, the cake turns out too dense without it; I’ve tried it both ways), then I add it, again, in a rain-like fashion, spoon by spoon, without slamming the mixture, or else goodbye fluffiness. When everything is integrated, I divide the “dough” in two. I leave half plain, while in the other half, I add cocoa (dissolving the cocoa separately in two tablespoons of warm water, otherwise it clumps together; I’ve experienced that).
Here’s the fun part: in a baking tray lined with parchment paper (I use a classic 35x25 cm tray), I scoop, one spoon at a time, alternating between the white mixture and the cocoa one. I play a bit like in hopscotch to create a pattern. The first time it turned out chaotic, but the taste was the same, just so you know.
I put the cake base in a preheated oven at 175-180°C. For me, it’s done after 25 minutes, but if you have a more temperamental oven, do the toothpick test. Don’t take it out too early, or it will deflate.
Once it’s done, I let it cool on a rack or on the stove (if I have the patience), then I cut it horizontally, like a big sandwich. The first few times, I couldn’t get it straight, but I started using a long bread knife, which glides through easily without crumbling.
2. The Syrup
In a small pot, I boil water with sugar. It should boil for about 3-4 minutes; you don’t need to caramelize it, just dissolve all the sugar and let it reduce a bit. After removing it from the heat, I add the rum essence. Don’t add the essence while it’s still hot, as it evaporates, and you won’t taste anything in the cake. Let it cool completely.
3. The Whipped Cream and Rum Mousse
This is the part I’ve refined over time because it didn’t always turn out the same, especially with the gelatin. First, I mix the yolks (five) with powdered sugar and milk directly in a thick-bottomed pot. I place it over very low heat, whisking nonstop to avoid making an omelet. When it thickens a bit, I remove it from the heat.
I let the gelatin hydrate in cold water for 10 minutes. I don’t know why, but if you use warm water, it doesn’t hydrate evenly. After it’s hydrated, I melt it over a double boiler (you can use the microwave, but I’ve had it boil and then the cream didn’t set), then I incorporate it into the yolks. I let everything cool.
While the yolk mixture cools, I whip the liquid cream. Tip: the cream should be very cold; otherwise, it won’t whip properly and will just bubble. Once it’s whipped, I add the yolk mixture (when it’s at room temperature, not warm!) and the rum essence. I mix for 2-3 minutes until everything is creamy and fluffy, like a cloud.
4. Assembly
I place the first half of the cake back in the tray, soak it (don’t drown it; it shouldn’t float, but it also shouldn’t be dry, about 2-3 tablespoons over the entire surface). I pour the whipped cream and rum mousse on top, leveling it with a spatula for an even surface, then I place the second cake layer on top. I soak the top layer as well, similarly, with moderation.
Don’t add the glaze immediately because the cream is too soft. I let the cake chill in the fridge for at least two to three hours. When I take it out, I use a long knife dipped in hot water to cut it into portions as needed. I keep the rest in the fridge; it stores well.
5. The Chocolate Glaze
I break the chocolate (I use one with over 50% cocoa, so it’s not too sweet) into pieces and melt it with the liquid cream over a double boiler. I stir until it’s smooth and fine, then with a spoon, I drizzle it over each piece of cake, or – if I’m in a hurry – I spread it over the entire cake in the tray. If you want it to look fancier, you can save 2-3 tablespoons of mousse cream and make “swirls” with a piping bag after the glaze has set.
I don’t like the glaze to be too thick; just enough to cover nicely and crack when you bite into it.
Tips and Substitutions
If you don’t have rum essence, you can use vanilla essence, but it gives a completely different vibe. Or you can add a bit of liqueur, but be cautious with kids, as the flavor is stronger.
Use natural liquid cream, not the vegetable kind, if you want a fine texture and authentic taste. If you don’t have time to make the mousse with yolks and gelatin, you can “shortcut” it by just using whipped cream with a bit of sugar and flavorings, but it won’t be the same mousse; it’s more like a summer diplomat cake.
For the cake base, you can also add a small pinch of instant coffee (a pinch you can take with two fingers) if you want to enhance the chocolate flavor.
What to drink with it? It pairs well with strong coffee, espresso, or cold milk if you’re serving it to kids. For adults, maybe a small glass of coffee liqueur or, if you’re feeling fancy, a splash of dry red wine – tastes vary.
Other recipes to accompany it? A cheesecake with fruits, something a bit tangy, or buttery cookies. And yes, it goes wonderfully after a meal with roast or heavier food because the mousse is light and doesn’t weigh down the finish.
Variations
You can make the cake base entirely with cocoa (everything brown, so you don’t have to stress about the pattern), or, if you’re up for it, with three layers of cake and two layers of cream for a “layered cake” effect. I’ve also seen it made with cherries between the layers, but honestly, I prefer it without fruits, to keep that clear flavor of rum and chocolate.
Instead of chocolate glaze, if it’s summer and you want something more refreshing, you can make a berry jelly, or simply sprinkle powdered sugar on top.
Best Pairings
We most often enjoy it with our morning coffee, “for control,” as we say, but it’s the cake for birthdays or afternoons spent chatting. It’s great to take to work; it doesn’t leak, doesn’t spoil, and has no filling that stains. Tip: if you’re taking it to school for kids, cut the pieces smaller and don’t soak them too much or use thick glaze.
Frequently Asked Questions
1. Can I make the cake base two days in advance?
Yes, you can bake it, let it cool, wrap it in plastic wrap, and keep it in the fridge. It retains its texture and doesn’t dry out. I’ve done this when I had guests; the next day, I just assembled everything.
2. Natural or vegetable cream?
Always, for taste and texture, I choose natural cream (from sweet cream). Vegetable cream is cheaper, but it doesn’t provide the same flavor, and the texture is artificial. If you have no choice, it will still work, but the final result won’t be the same.
3. Can I replace gelatin with something else?
There are alternatives with agar-agar, but the quantity needs to be adjusted (agar-agar is firmer and gels differently). I haven’t tried it, but I have friends who use more whipped cream and skip the gelatin entirely for a softer cream, like in Diplomat.
4. Can I freeze the cake?
I don’t recommend it. The cream with gelatin and whipped cream doesn’t handle freezing and thawing well; the texture becomes strange and somewhat grainy. It’s better to keep it in the fridge and consume it within 3-4 days.
5. Can I make it with less sugar?
Sure, you can reduce the sugar by 15-20%, but don’t expect it to be as “creamy” in the cake and mousse. I prefer to keep the cream as sweet as it is and reduce the sugar in the cake if necessary.
Nutritional Values (approx.)
If you divide the cake into 15 portions, each piece has about 280-320 kcal, depending on how much syrup or glaze you use. Of the total, about 35-38% are carbohydrates, around 12-13% fats (from cream, eggs, oil, and chocolate), and the protein comes from eggs, cream, and gelatin, about 5-6 g per portion. It’s a rich dessert, yes, it’s not for dieting, but at least you know exactly what goes into it. It contains no additives, no margarine, and if you use natural cream and good quality chocolate, it’s cleaner than any pastry shop cake.
How to Store and Reheat
Keep it in the fridge, covered, so it doesn’t absorb odors. It easily lasts 3-4 days; in my experience, it hasn’t lasted more than 2, but tested, nothing happens. There’s no need to heat it; in fact, it’s better cold when the cream is well-set and the glaze is slightly crispy when you bite into it.
Ingredients and Their Purpose
Eggs – the base of the cake, for fluffiness and stability
Sugar – for both the cake and the cream and syrup; it provides structure and flavor
Flour – texture for the cake, “binds” the mixture
Baking powder – helps the cake rise; otherwise, it turns out too dense
Oil – keeps the cake moist and tender, not dry
Cocoa – for color and a subtle chocolate flavor
Water – for the syrup, dissolving cocoa, hydrating gelatin
Rum essence – classic flavor, a scent that defines the cake
Gelatin – gives firmness to the mousse, helps it hold its shape when cut
Milk – adds more smoothness to the yolk cream
Liquid cream – for the mousse (creaminess and volume) and glaze
Chocolate – the final layer, for contrast and intense flavor
Powdered sugar – incorporates more easily into the cream than granulated sugar, without graininess
If you decide to make it now, know that it takes about two hours of active time (plus some chilling time for the cream in the fridge, around 2-3 hours, but you don’t have to hover around it). It yields a substantial tray, about 15 decent pieces, enough to serve a family of four and even some guests. It’s not the simplest cake, I warn you, but you don’t need a pastry chef diploma either. I’d say it’s at a medium level, but if you follow the steps and don’t rush, you can’t go wrong.
Why do I keep making it? Because the cake base is moist, not crumbly, it has a light cream with a clear rum flavor (and don’t worry, it’s not strong, just aromatic), and the chocolate glaze… yes, I admit, I always add more than I should. It’s suitable for more formal occasions, but honestly, I love eating it straight from the pan in the evening, with cold coffee on the side. And maybe also because, given how beautiful it looks in the end, you wouldn’t guess how “actually simple” it is. Plus, everyone asks for the recipe.
1. The Cake Base — which is the foundation, and I never want to mess it up
I always start with the eggs. Seven in total, I crack them all and separate the egg whites from the yolks. I put the egg whites in a clean, large bowl and beat them with a mixer, adding a pinch of salt. When I see it starting to foam, I add the sugar, but I don’t pour it all at once; I add it spoon by spoon, just like for meringue. I continue until the bowl can be turned upside down and nothing falls out; that’s how I used to test it at the beginning – now I don’t take that risk, because once I dropped the meringue on the table…
I mix the yolks with the oil, little by little, like for mayonnaise – if you add all the oil at once, it’ll curdle, so be patient to get it shiny and smooth. Then I pour it over the egg whites, and here, don’t go mixing like crazy, or everything will deflate. I fold it gently with a spatula, using broad movements from bottom to top, until it’s somewhat homogeneous.
I mix the flour separately with the baking powder (yes, I know some skip this, but for me, the cake turns out too dense without it; I’ve tried it both ways), then I add it, again, in a rain-like fashion, spoon by spoon, without slamming the mixture, or else goodbye fluffiness. When everything is integrated, I divide the “dough” in two. I leave half plain, while in the other half, I add cocoa (dissolving the cocoa separately in two tablespoons of warm water, otherwise it clumps together; I’ve experienced that).
Here’s the fun part: in a baking tray lined with parchment paper (I use a classic 35x25 cm tray), I scoop, one spoon at a time, alternating between the white mixture and the cocoa one. I play a bit like in hopscotch to create a pattern. The first time it turned out chaotic, but the taste was the same, just so you know.
I put the cake base in a preheated oven at 175-180°C. For me, it’s done after 25 minutes, but if you have a more temperamental oven, do the toothpick test. Don’t take it out too early, or it will deflate.
Once it’s done, I let it cool on a rack or on the stove (if I have the patience), then I cut it horizontally, like a big sandwich. The first few times, I couldn’t get it straight, but I started using a long bread knife, which glides through easily without crumbling.
2. The Syrup
In a small pot, I boil water with sugar. It should boil for about 3-4 minutes; you don’t need to caramelize it, just dissolve all the sugar and let it reduce a bit. After removing it from the heat, I add the rum essence. Don’t add the essence while it’s still hot, as it evaporates, and you won’t taste anything in the cake. Let it cool completely.
3. The Whipped Cream and Rum Mousse
This is the part I’ve refined over time because it didn’t always turn out the same, especially with the gelatin. First, I mix the yolks (five) with powdered sugar and milk directly in a thick-bottomed pot. I place it over very low heat, whisking nonstop to avoid making an omelet. When it thickens a bit, I remove it from the heat.
I let the gelatin hydrate in cold water for 10 minutes. I don’t know why, but if you use warm water, it doesn’t hydrate evenly. After it’s hydrated, I melt it over a double boiler (you can use the microwave, but I’ve had it boil and then the cream didn’t set), then I incorporate it into the yolks. I let everything cool.
While the yolk mixture cools, I whip the liquid cream. Tip: the cream should be very cold; otherwise, it won’t whip properly and will just bubble. Once it’s whipped, I add the yolk mixture (when it’s at room temperature, not warm!) and the rum essence. I mix for 2-3 minutes until everything is creamy and fluffy, like a cloud.
4. Assembly
I place the first half of the cake back in the tray, soak it (don’t drown it; it shouldn’t float, but it also shouldn’t be dry, about 2-3 tablespoons over the entire surface). I pour the whipped cream and rum mousse on top, leveling it with a spatula for an even surface, then I place the second cake layer on top. I soak the top layer as well, similarly, with moderation.
Don’t add the glaze immediately because the cream is too soft. I let the cake chill in the fridge for at least two to three hours. When I take it out, I use a long knife dipped in hot water to cut it into portions as needed. I keep the rest in the fridge; it stores well.
5. The Chocolate Glaze
I break the chocolate (I use one with over 50% cocoa, so it’s not too sweet) into pieces and melt it with the liquid cream over a double boiler. I stir until it’s smooth and fine, then with a spoon, I drizzle it over each piece of cake, or – if I’m in a hurry – I spread it over the entire cake in the tray. If you want it to look fancier, you can save 2-3 tablespoons of mousse cream and make “swirls” with a piping bag after the glaze has set.
I don’t like the glaze to be too thick; just enough to cover nicely and crack when you bite into it.
Tips and Substitutions
If you don’t have rum essence, you can use vanilla essence, but it gives a completely different vibe. Or you can add a bit of liqueur, but be cautious with kids, as the flavor is stronger.
Use natural liquid cream, not the vegetable kind, if you want a fine texture and authentic taste. If you don’t have time to make the mousse with yolks and gelatin, you can “shortcut” it by just using whipped cream with a bit of sugar and flavorings, but it won’t be the same mousse; it’s more like a summer diplomat cake.
For the cake base, you can also add a small pinch of instant coffee (a pinch you can take with two fingers) if you want to enhance the chocolate flavor.
What to drink with it? It pairs well with strong coffee, espresso, or cold milk if you’re serving it to kids. For adults, maybe a small glass of coffee liqueur or, if you’re feeling fancy, a splash of dry red wine – tastes vary.
Other recipes to accompany it? A cheesecake with fruits, something a bit tangy, or buttery cookies. And yes, it goes wonderfully after a meal with roast or heavier food because the mousse is light and doesn’t weigh down the finish.
Variations
You can make the cake base entirely with cocoa (everything brown, so you don’t have to stress about the pattern), or, if you’re up for it, with three layers of cake and two layers of cream for a “layered cake” effect. I’ve also seen it made with cherries between the layers, but honestly, I prefer it without fruits, to keep that clear flavor of rum and chocolate.
Instead of chocolate glaze, if it’s summer and you want something more refreshing, you can make a berry jelly, or simply sprinkle powdered sugar on top.
Best Pairings
We most often enjoy it with our morning coffee, “for control,” as we say, but it’s the cake for birthdays or afternoons spent chatting. It’s great to take to work; it doesn’t leak, doesn’t spoil, and has no filling that stains. Tip: if you’re taking it to school for kids, cut the pieces smaller and don’t soak them too much or use thick glaze.
Frequently Asked Questions
1. Can I make the cake base two days in advance?
Yes, you can bake it, let it cool, wrap it in plastic wrap, and keep it in the fridge. It retains its texture and doesn’t dry out. I’ve done this when I had guests; the next day, I just assembled everything.
2. Natural or vegetable cream?
Always, for taste and texture, I choose natural cream (from sweet cream). Vegetable cream is cheaper, but it doesn’t provide the same flavor, and the texture is artificial. If you have no choice, it will still work, but the final result won’t be the same.
3. Can I replace gelatin with something else?
There are alternatives with agar-agar, but the quantity needs to be adjusted (agar-agar is firmer and gels differently). I haven’t tried it, but I have friends who use more whipped cream and skip the gelatin entirely for a softer cream, like in Diplomat.
4. Can I freeze the cake?
I don’t recommend it. The cream with gelatin and whipped cream doesn’t handle freezing and thawing well; the texture becomes strange and somewhat grainy. It’s better to keep it in the fridge and consume it within 3-4 days.
5. Can I make it with less sugar?
Sure, you can reduce the sugar by 15-20%, but don’t expect it to be as “creamy” in the cake and mousse. I prefer to keep the cream as sweet as it is and reduce the sugar in the cake if necessary.
Nutritional Values (approx.)
If you divide the cake into 15 portions, each piece has about 280-320 kcal, depending on how much syrup or glaze you use. Of the total, about 35-38% are carbohydrates, around 12-13% fats (from cream, eggs, oil, and chocolate), and the protein comes from eggs, cream, and gelatin, about 5-6 g per portion. It’s a rich dessert, yes, it’s not for dieting, but at least you know exactly what goes into it. It contains no additives, no margarine, and if you use natural cream and good quality chocolate, it’s cleaner than any pastry shop cake.
How to Store and Reheat
Keep it in the fridge, covered, so it doesn’t absorb odors. It easily lasts 3-4 days; in my experience, it hasn’t lasted more than 2, but tested, nothing happens. There’s no need to heat it; in fact, it’s better cold when the cream is well-set and the glaze is slightly crispy when you bite into it.
Ingredients and Their Purpose
Eggs – the base of the cake, for fluffiness and stability
Sugar – for both the cake and the cream and syrup; it provides structure and flavor
Flour – texture for the cake, “binds” the mixture
Baking powder – helps the cake rise; otherwise, it turns out too dense
Oil – keeps the cake moist and tender, not dry
Cocoa – for color and a subtle chocolate flavor
Water – for the syrup, dissolving cocoa, hydrating gelatin
Rum essence – classic flavor, a scent that defines the cake
Gelatin – gives firmness to the mousse, helps it hold its shape when cut
Milk – adds more smoothness to the yolk cream
Liquid cream – for the mousse (creaminess and volume) and glaze
Chocolate – the final layer, for contrast and intense flavor
Powdered sugar – incorporates more easily into the cream than granulated sugar, without graininess