Bird's Milk Cake (Ptichye Moloko)

This Russian Bird's Milk Cake (ptichye moloko) is made with a delicate vanilla soufflé, covered in rich chocolate ganache, and soft sponge layers — a true Slavic classic. The name literally means "the milk of birds," from an ancient legend that birds of paradise fed their chicks with this sacred ingredient.

The filling is extraordinarily airy, creamy and delicately flavoured, covered with a thin layer of chocolate — the better the chocolate, the better the cake. In Russia, Latvia, Belarus, Ukraine and Estonia you'll find bird's milk as both a cake and as boxed bonbons; it's been a favourite since Soviet times. I used an 18 cm/7-inch cake ring and 16 cm/6-inch sponges for the inside.

Why you'll love bird's milk cake

• Cloud-like vanilla soufflé that melts in your mouth.
• Thin, snappy chocolate top balanced with soft sponge layers.
• A nostalgic Eastern European classic — few people outside the region have tried it.
• Make-ahead — it needs time to set anyway.

Ingredients (one 7-inch cake, serves 8–10)

This is a precise recipe, so grams and a kitchen scale give the best results.

Sponge

• 80g plain flour
• 12g cornstarch
• 4g (1 tsp) baking powder
• 2 eggs
• 80g sugar

Syrup

• 80g water
• 60g condensed milk

Vanilla Soufflé

• 100g egg whites (about 3 large)
• 90g granulated sugar
• 40g water
• 9g gelatine powder + 45g cold water
• 200g double/heavy cream
• 260g mascarpone cheese
• 60g condensed milk

Chocolate Glaze

• 18g vegetable oil
• 105g milk chocolate (dark also works)

Directions

1. Beat eggs with sugar on high speed. Fold in sifted dry ingredients gently.
2. Pour into a 16cm mold, bake 15-20 minutes at 175°C/350°F. Cool, then refrigerate 2-3 hours or overnight.
3. Trim and cut the sponge in half to create 2 layers.
4. Combine water and condensed milk for the syrup, warm briefly, brush over each sponge.
5. Bloom gelatine in cold water. Cook sugar and water to 116-118°C/240-244°F.
6. At 114-116°C, begin whisking egg whites on medium speed. Once the syrup reaches temperature, stream it into the whites while whisking to a smooth, shiny meringue.
7. Add room-temperature mascarpone and condensed milk. Melt gelatine briefly and whisk in.
8. Fold in lightly whipped cream and assemble immediately — the soufflé sets fast.
9. Line an 18cm pan, add the first sponge layer, soak with syrup, pour 2/3 of the soufflé over it. Add the second sponge, more syrup, then the remaining soufflé. Freeze 1 hour or refrigerate 4-6 hours.
10. Melt glaze ingredients together and pour over the set cake. Chill to set fully before serving.

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Alla's tips

• Use a thermometer. The syrup temperature (116–118°C) is what makes the soufflé stable.
• Time the meringue and syrup together so the whites are softly whipped just as the syrup is ready.
• Whisk egg whites on medium, not high — overwhipped whites turn dry and flaky.
• Room-temperature mascarpone blends smoothly without lumps.
• Don't overheat the gelatine — 5–10 seconds in the microwave is enough.
• Work fast once the cream goes in — the soufflé starts setting quickly.
• Line the ring with acetate for perfectly smooth sides (optional).

Storage

Keep covered in the fridge for up to 4 days. Freeze slices for up to 1 month and thaw overnight in the fridge.

Frequently asked questions

What is bird's milk cake?
Ptichye moloko is a classic Russian cake with a light vanilla soufflé filling, thin sponge layers and a chocolate topping.

Why is it called bird's milk?
In legend, "bird's milk" was a rare, magical delicacy — something so special it hardly exists. The name says this cake is a true luxury.

Can I use agar instead of gelatine?
The original Soviet version used agar. This recipe is written for gelatine; agar needs boiling and sets differently, so use a recipe designed for agar.

Why is my soufflé runny?
The syrup didn't reach temperature or the gelatine wasn't fully dissolved. Use a thermometer and make sure the gelatine is liquid.

Can I make it without mascarpone?
You can use full-fat cream cheese, though the soufflé will be a little tangier.

More Russian & Eastern European desserts to try

• Russian Honey Cake
• Kiev Cake
• Vanilla Zephyr
• Russian Caramel Cookies (Oreshki)

Hugs, Alla xox

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