Asian broth with coley, greens and soba noodles

Ingredients

• 600ml water
• 2 cloves garlic, peeled and finely sliced
• 1 stick of lemongrass, finely sliced
• 1/2 red chilli (or to taste), finely sliced
• 1 shallot or 1/2 an onion, finely diced
• 8 sprigs of coriander, leaves picked, stalks finely chopped
• 150g seasonal greens: purple sprouting broccoli, cavalo nero, kale, spinach
• 250g fillet of coley, largely diced
• 75g bundle of soba or rice noodles
• 1 tbsp fish sauce (optional)
• Soya sauce and lemon to serve