Frozen fruit sorbet

Name: Frozen fruit sorbet
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Cuisine: World Cuisine
Ingredients: 60 - 100 g sugar, to taste; 500 g fresh mixed fruit, cut into pieces (3-4 cm) as needed, frozen in a single layer (see Tips); 2 tsp lemon juice (approx. ½ lemon - optional); 1 egg white (optional)