Filling:
Prepare Gelatine:
Soak the gelatine sheets in cold water for 5-10 minutes (if using gelatine powder, skip this step and follow the package instructions for agar agar).
Whip Cream:
Whip 470 ml of whipping cream with vanilla until medium peaks form.
Dissolve Gelatine:
Squeeze the soaked gelatine sheets and dissolve them in 30 ml of hot whipping cream.
Heat for a few seconds if needed to fully dissolve.
Combine Cream and Gelatine:
Add the dissolved gelatine mixture and powdered sugar to the whipped cream.
Whip until firm medium-stiff peaks form, being careful not to overwhip.
