75 g (3 oz) thin egg noodles
25 g (1 oz) 2 tbsp unsalted butter
1 small bunch spring onions, chopped
1 celery stick, sliced
1 medium carrot, cut into batons
1.2 litres (2 pints) 5 cups chicken stock
60 ml (4 tbsp) dry sherry
115 g (4 oz) white crab meat, fresh or frozen
pinch of celery salt
pinch of cayenne pepper
10 ml (2 tsp) lemon juice
1 small bunch coriander or flat-leaf parsley, roughly chopped, to garnish