Poached Prawns with Thai Herbs and Rice Noodles

Ingredients

• 500 ml (2 cups) coconut milk
• 60 ml (¼ cup) lime juice, or to taste
• 2 tbsp fish sauce, or to taste
• 1 tbsp soy sauce
• 1 tbsp finely grated light palm sugar, or to taste
• 3 kaffir lime leaves, coarsely crushed
• 1 small red chilli, finely chopped, or to taste
• 16 medium green prawns, peeled, tails intact
• 200 gm dried rice noodles
• 1 cup (loosely packed) each coriander, Thai basil and mint
• 1 Lebanese cucumber, thinly sliced