Ingredients for a 1 Pint (0.5 L) Dispenser:
3 pieces Sheet of gelatin
400 ml Grapefruit juice
100 ml Sugar syrup
Soften the gelatin in cold water. Heat 3 tbsp. of juice and dissolve the gelatin in the juice, then mix with the rest of the ingredients. Pass the mixture through an iSi Funnel & Sieve directly into the dispenser. Screw on one iSi Cream Charger and shake vigorously. Leave to cool in the refrigerator for several hours. Shake well before serving.
Serve as a crown on sparkling wine.