Fresh Prawn Spring Rolls

Name: Fresh Prawn Spring Rolls
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Cuisine: Asian, Thai
Ingredients: 40 g carrots, peeled, cut in sticks (5 cm x 5 mm); 1 tsp fine sea salt; 1300 g water; 8 fresh green beans, ends removed, cut in long pieces; 1 bunch rice vermicelli (approx. 40 g), briefly rinsed with water to soften, cut in small sections (5 cm); 8 large raw prawns, peeled, deveined; 8 pieces spring roll rice paper; 8 leaves iceberg lettuce, shredded; 3 sprigs fresh coriander, leaves only, plus 1 sprig roughly chopped leaves for garnishing (optional); 1 garlic clove; ½ fresh red chilli, deseeded; 2 Tbsp caster sugar; 2 Tbsp lime juice; 2 Tbsp fish sauce; 1 Tbsp rice vinegar