Vietnamese soup with glass noodles

The heat from this soup will gently soften the raw vegetables once they are placed inside it. Serves 4.
Ingredients:
For the soup
- 2 sticks of celery, roughly chopped
- 1 onion, peeled and roughly chopped
- 2 carrots, roughly chopped
- 50g dried porcini mushrooms
- 2 sprigs of thyme
- 2 sprigs of rosemary
- 1 tsp pink salt
- 1 tbsp fresh lime juice
- ½ tsp chilli flakes
- 2 litres of water
To serve
- 250g glass noodles
- A handful of coriander, roughly chopped
- A small handful of mint,
- roughly chopped
- 1 carrot, grated
- 3 spring onions, julienned
- 1 romano pepper, julienned
- 2 heads of pak choi, separated into
- individual leaves and sliced lengthways
- 200g organic tofu, cubed, rolled in rice
- flour and pan fried (optional)
- 1 tbsp extra virgin olive oil
Method:
- Place the celery, onion, carrots, dried mushrooms, thyme, rosemary, salt and water in a large pan and bring to the boil. Cover with a lid and then simmer for 45 minutes.
- Remove the soup pan from the heat and use a slotted spoon to remove the chunks of vegetable and herbs. You should be left with a translucent, golden brown broth. Stir the lime juice and chilli through the broth, then gently simmer to keep warm.
- Fill a small pan with enough water to cover the glass noodles, add a pinch of salt and bring to the boil. Boil the noodles for 8-10 minutes until soft, then remove from the heat and dunk in cold water. Drain the now cold noodles and drizzle with the olive oil to prevent them from sticking together.
- Arrange the coriander, mint, carrot, spring onions, pak choi and tofu (if you choose to use it) in small bowls or on a serving plate.
To assemble the soup, add some noodles to each bowl with a ladleful of the broth, the sliced vegetables, herbs and a wedge of lime. Stir well and enjoy.