Bring the first 6 ingredients to the boil in a large pot. Reduce the heat and simmer for 5 minutes. Add the remaining ingredients, except the noodles and coriander, and simmer for about 10 minutes. Adjust the seasoning to taste. Spoon the noodles into heated bowls and ladle over the soup. Sprinkle with fresh coriander and serve with a spoon and chopsticks.
Tip: You’ll find a great selection of exotic mushrooms at Woolworths and selected delis nationwide. Other good things to add include bean sprouts, shredded cooked chicken or beef, prawns, chunks of firm fish, chopped baby marrow, spinach or Asian greens.