Yellow curry with mushroom and cauliflower (Dandelion restaurant)

Name: Yellow curry with mushroom and cauliflower (Dandelion restaurant)
Prep time: 10 min
Cook time: 55 min
Total time: 55 min
Yield: 4 portions
Ingredients: 3 stalks fresh lemongrass; 40 g fresh turmeric; 50 g fresh galangal; 10 makrut lime leaves; 50 g vegetable oil; 10 g Korean chilli paste (gochujang); ¾ tsp ground turmeric; 6 fresh king oyster mushrooms; ½ cauliflower; 2 tbsp water; 3 tbsp ghee; 300 g coconut water; 500 g coconut cream; 20 g palm sugar; 1 tsp fish sauce; 1 pinch xanthan gum; 20 g freshly squeezed lime juice; fresh coriander; fresh mint; green mango; red chilli oil; 1 fresh lime