Thai-style prawn broth, Spicy apples

Name: Thai-style prawn broth, Spicy apples
Prep time: 30 min
Cook time: 1 h 15 min
Total time: 1 h 15 min
Yield: 4 portions
Ingredients: 4 cooking apples; 2 tsp vanilla sugar, homemade; 4 star anise; 4 pinches ground ginger; 4 cloves; 4 pinches ground cinnamon; 150 g onions; 20 - 30 g fresh ginger; 1 fresh chilli; 15 g olive oil; 800 g raw prawns with heads and shells; 1400 g water; 40 g rice vinegar; 30 g fish sauce; 2 cloves; 1 star anise; 3 pinches salt; 3 pinches ground black pepper; 80 g dried Chinese egg noodles; 100 g fresh soybean sprouts; 15 fresh coriander leaves