- 2 × sheet(s) of gelatin
- 25 ml blood orange juice
- 200 ml Martini Rosso
- 200 ml Martini Bitter
- 100 ml water
Soften the gelatin in water. Mix the Martini Rosso, Martini Bitter, and water. Heat up a small amount of the mixture and dissolve the pressed gelatin in it. Add the rest of the mixture and stir well. Pass the mixture through the iSi funnel & sieve directly into the 0.5 L (~17 fl. oz.) iSi Whipper. Screw on 1 iSi cream charger and shake vigorously. Refrigerate for at least 6 hours. Shake vigorously before serving.
Pour 25 ml blood orange juice into a long drink glass, add ice cubes, and top up with espuma. Serve immediately.
Double the ingredients for a 1 L (~34 fl. oz.) iSi Whipper. Screw on 2 iSi cream chargers one after the other. Shake vigorously after attaching each charger. Halve the ingredients if using a 0.25 L (~8.5 fl. oz.) iSi Whipper.
Recipe from Ferran Adrià, Restaurant El Bulli, Roses (Spain)