Strawberry, white chocolate and pistachio parfaits

Name: Strawberry, white chocolate and pistachio parfaits
Prep time: 15 min
Cook time: 5 h
Total time: 5 h
Yield: 8 portions
Ingredients: 60 g shelled unsalted pistachio nuts; 170 g pouring (whipping) cream; 1 egg white; 60 g caster sugar; 300 g strawberry; 20 g freshly squeezed lemon juice; 150 g white chocolate