Frozen strawberry mousse with cream cheese topping

Name: Frozen strawberry mousse with cream cheese topping
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 10 min
Yield: 4 portions
Ingredients: 1 lemon; 500 g white balsamic vinegar; 50 g dry sherry; 80 g raw sugar; 2 dried bay leaves; 8 whole white peppercorns; 6 sprigs fresh thyme; 1 spring onion/shallot; 100 g frozen strawberries; 4 fresh mint leaves; 1 - 2 pinches ground black pepper; 1 egg white; 20 g natural yoghurt; 50 g natural yoghurt; 2 tbsp pure maple syrup; 100 g cream cheese; fresh strawberries