Heat oil in a deep pan, add the cloves, cinnamon add the sliced mushroom and sauté for a minute or two
Add the grated turmeric, and ginger, sauté
Add all the remaining vegetables and the flour, stir, add 6 -7 cups of warm water, mix well, add the lemon grass bits and salt
Simmer on a low flame for 10- 15 minutes till all flavours are well extracted into the soup
Add chili flakes and pounded pepper to taste
Just before serving add the grated galangal, chopped coriander leaves and lemon juice, adjust seasonings and serve hot