Heat the oil in a large saucepan.
Add in the onion, stirring for a minute or two.
Then, add the garlic, stirring for another minute.
Add in the mushrooms and cook for few minutes or until the onions become transparent.
Add in the vegetable broth, coconut milk and lime juice.
Bring to a boil and then turn the heat down to medium-low.
Stir in the salt, cover and let simmer for 15 - 20 minutes.
Serve warm and garnish with green onion or chives, sprouts and lime slices.