Lime panna cotta with gin and finger lime granita

Name: Lime panna cotta with gin and finger lime granita
Prep time: 15 min
Cook time: 24 h 30 min
Total time: 24 h 30 min
Yield: 6 portions
Ingredients: 60 g caster sugar; 60 g water; 40 g gin; 200 g tonic water; 1 - 2 finger limes; 3 titanium strength gelatine leaves; 150 g caster sugar; 2 limes; 300 g pouring (whipping) cream; 300 g buttermilk; 40 g lime juice; 120 g caster sugar; 20 g water