In a mortar, pound together the chilis, galangal and shallots to form a paste and set aside. Deep-fry the beancurd dice until crispy brown, drain and set aside. Heat the 2 tbsp (30 ml) oil and fry the garlic golden brown. Stir in the paste, add the lemon grass and coconut, stirring well. Add all the vegetables and briefly stir-fry. Add the stock, soy sauce and sugar. Stir well and turn on to a serving dish.