Step 1: Prepare the Crust and Filling Base
If you’re using a homemade crust, bake and cool it completely before filling.
For a store-bought crust, skip baking and spread a thin, even layer of elderberry preserves on the bottom — this adds a fruity sweetness that pairs beautifully with the honey-custard flavor.
Step 2: Make the Custard Mixture
In a saucepan, whisk together egg yolks, a little elderflower syrup, gelatin, and a pinch of salt.
Warm the milk until just simmering, then slowly pour it into the yolk mixture while whisking constantly — this gently tempers the eggs.
Cook the mixture over medium heat for 4–5 minutes, stirring until it slightly thickens and coats the back of a spoon.
Strain the hot custard through a fine sieve to remove any lumps, then cool it over an ice bath until smooth and creamy.
Step 3: Whip and Fold for Airy Texture
Beat egg white with lemon juice until stiff peaks form.
In a separate bowl, whip heavy cream until soft peaks appear.
Gently fold both into the cooled custard using a spatula — this makes the filling light, airy, and mousse-like.
Step 4: Add the Honeycomb Pattern and Set
Pour the creamy mixture into your prepared crust and smooth the top.
Lay a clean, food-safe bubble-wrap sheet (bubble side down) over the surface to create that signature honeycomb texture.
Freeze for at least 3 hours, or overnight for a firmer, sliceable pie.
Step 5: Drizzle, Decorate, and Serve
Peel off the bubble wrap to reveal the beautiful honeycomb pattern.
Simmer the remaining elderflower syrup until slightly thickened, then let it cool and drizzle over the pie.
Thaw in the fridge for about 1 hour before slicing.
For a bakery-style finish, decorate with edible flowers, gold dust, or sugar bees — perfect for special occasions!