An Authentic Bled Bonfire

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A culinary look at the legendary Gorenjska dessert, where the seemingly chaotic “tossing” of ingredients into a pile creates the most harmonious explosion of flavors in your mouth! The Bled Grmada rightfully holds the crown of Slovenian culinary heritage. This dessert, which resembles a lavish mound (grmada), consists of two layers of sponge cake cut into cubes, which are literally soaked in sweet rum, and then enveloped by a rich, warm egg custard enriched with ground walnuts and raisins. But the secret of a true grmada lies not only in its ingredients, but in the pastry techniques behind it. In this in-depth recipe, we reveal why we must fold the beaten egg whites exclusively into hot egg custard (tempering and pasteurization) and how the “soaking and layering” technique prevents the dessert from turning into a crumbly mess, while offering that authentic, nostalgic blend of flavors that makes every bite shine beneath a cap of whipped cream and a glossy chocolate glaze.

• Prep time for the filling and sponge cake: 30 minutes
• Cooking and baking time: 35 minutes
• Chilling time: Must be left overnight
• Yield: for a baking pan approx. 30×22 cm (10 to 12 servings)
• Difficulty: Medium (requires making an egg custard)

Ingredients for the Bled Cake

Two-Color Sponge Cake

• 6 fresh eggs (yolks and whites separated)
• 150 g granulated sugar
• 150 g all-purpose flour
• 1 packet of baking powder
• 1 heaping tablespoon of unsweetened cocoa powder (for the dark half)
• a pinch of salt

Glaze for Juiciness (Rum Syrup)

• 4 dl milk
• 2 to 3 tablespoons of sugar
• 2 to 3 tablespoons of rum (or 1 packet of vanilla sugar for a non-alcoholic version)

Famous Egg Custard (Kremšnita-Style)

• 1 liter of whole milk
• 5 fresh eggs (separated)
• 140 g white sugar
• 100 g all-purpose flour and 40 g cornstarch (Gustin) for a perfectly silky texture
• 1 tablespoon vanilla paste (or 2 packets of vanilla sugar)
• 1 to 2 tablespoons of rum (to taste)
• a pinch of salt

The Filling and the Finishing Touch (Decoration)

• 100 g finely ground walnuts
• 60–80 g raisins (previously soaked in 2 to 3 tablespoons of rum)
• 2 dl cold sweet whipping cream
• For the chocolate glaze: 200 g cooking chocolate and 1.5 dl liquid sweet cream

Step-by-Step Preparation Instructions

1. Preparing the sponge cake: Preheat the oven to 180 °C (conventional heat). In one bowl, beat the egg whites with a pinch of salt until stiff peaks form. In another bowl, beat the egg yolks and sugar until fluffy (at least 3 to 4 minutes), until the mixture lightens significantly and increases in volume. Then, by hand, sift the flour and baking powder into the egg yolks through a fine sieve. Finally, very gently fold in the beaten egg whites with a spatula. The batter should remain light and airy.

2Two-Tone Baking: Divide the prepared batter into two equal halves. Gently and quickly fold the sifted cocoa into one half. Line a large baking pan (approximately 30×22 cm) with parchment paper. Pour the light batter into one half of the pan and the dark cocoa batter into the other half. Bake for 22 to 25 minutes. Once the sponge cake is baked and completely cooled, cut it into two equal “layers” (one light and one dark).

3. Preparing the rum syrup and chocolate ganache: Gently heat the milk for the syrup (4 dl), dissolve the sugar in it, and stir in the rum. The syrup should be warm (not hot) when you pour it over the sponge cake. For the chocolate glaze, heat 1.5 dl of heavy cream in a small saucepan until it comes to a boil, then pour it over the chopped chocolate. Wait one minute, then stir until smooth.

4. Making Gorenjska egg custard: In a large pot, bring 8 dl of milk and the vanilla paste to a boil. In a separate bowl, mix the egg yolks, sugar, flour, cornstarch, salt, and the remaining 2 dl of cold milk into a completely smooth paste. When the milk on the stove comes to a boil, reduce the heat and pour in the egg yolk mixture while stirring constantly and vigorously with a whisk. Cook for 2 to 3 minutes until you have a very thick, pudding-like cream. Remove from the heat.

5Pasteurizing the egg whites: Immediately beat the remaining five egg whites into stiff peaks. Then gently fold these peaks into the still-very-hot, freshly cooked cream in two batches!

6Assembling the “Grmada”: Place the light sponge cake at the bottom of a clean baking pan or glass dish. Pour half of the rum syrup evenly over it. Sprinkle with half of the ground walnuts and half of the rum-soaked raisins. Pour half of the still-warm egg custard over everything. Repeat the process with the dark sponge cake, the remaining syrup, walnuts, raisins, and the remaining custard. Refrigerate the dessert overnight!

7Serving with Style: The next day, cut the cake into slices or “scoop” it onto plates with a spoon (hence its name). Garnish it generously with unsweetened whipped cream and pour a generous amount of liquid chocolate sauce over it.

Professional Culinary Tips

• The Secret of a Silky Cream (The Role of Starch): If you thicken an egg cream (pastry cream or Crème Pâtissière) using only flour, it can become floury and “heavy.” By replacing some of the flour with edible starch (Gustin), you achieve an exceptionally glossy and silky texture that clings gently to the sponge cake while remaining stable in the refrigerator.
• The Science of Folding in Snow (Pasteurization): Why do we fold the beaten egg whites into hot cream rather than cooled cream? Hot cream (heated to approximately 90 °C) instantly pasteurizes the beaten egg whites upon contact. This not only destroys any bacteria (such as salmonella) but also “locks” the air in the egg whites into a firm network. As a result, the cream doesn’t collapse and becomes as light and airy as the best mousse.
• The Physics of Soaking Raisins: Dried raisins are dehydrated fruit with concentrated sugars. If you add them to the sponge cake while they’re still dry, they’ll absorb moisture from the egg custard, causing the custard to crack. Soaking them in rum triggers rehydration—the raisins become plump bursts of flavor and help keep the entire dessert moist.
• Why is overnight resting required? The cake is not a dessert meant to be served immediately. During the 12-hour resting period in the refrigerator, capillary action takes place within the sponge cake—the rum syrup and moisture from the egg cream distribute evenly throughout the entire structure, and the flavors of walnuts and cocoa intertwine. A fresh Grmada is crumbly, while a well-rested one cuts like butter.

Frequently Asked Questions (FAQ)

What if the cream burns or clumps up while I’m cooking?

This usually happens if the heat is too high or if you’re not stirring the bottom of the pot quickly enough. If you notice small lumps, immediately remove the pot from the heat and beat the cream vigorously in a circular motion with an electric mixer before adding the beaten egg whites. This will break up the lumps and restore the texture.

Can I leave out the rum (for children)?

Of course. Omit the rum entirely—both when soaking the raisins and in the syrup and cream. Instead of rum, add the juice of one squeezed lemon and a generous amount of vanilla extract to the syrup, and soak the raisins beforehand in warm, mild fruit tea or orange juice.

Can I use store-bought sponge cake?

Although homemade sponge cake offers unparalleled softness and freshness, you can use store-bought sponge cake sheets if you’re short on time. In this case, increase the amount of rum syrup by about 20%, as store-bought sponge cakes are usually very dry and hard and need more liquid to soften properly.

Fun fact: The origin of the legend

Did you know that the Bled Grmada isn’t actually an “ancient” national recipe? It was created in the early 1970s! The recipe was created by Janez Pristavec, the former head chef at the prestigious Bled Protocol Villa. He conceived the dessert as a Gorenjska version of the famous Hungarian “somloi galuska,” and due to its immense popularity among distinguished guests, the dish spread like wildfire and became an absolute legend in Gorenjska and throughout Slovenia.

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