These take around 20 minutes to set due to use of Geloozoon or Gellan Gum, a molecular gastronomy powder which makes instant setting jelly. If you don’t have any of this in your kitchen (!) then you can use agar agar which sets pretty quickly or gelatine*.
Halloween Recipe Development
The workshop teaches spherification (caviar pearls), reverse spherification (blackcurrant bubbles), deconstruction (chocolate powder), gelification (instant setting spaghetti jelly)