In a mortar and pestle, add 1 stalk lemongrass, 6 kaffir lime leaves, ½ inch galangal root, and ½ inch turmeric root. Pound it into a fine paste.
Once a paste has formed, add 10 garlic cloves, 1 shallot and 3 dried california chili pods and pound again.
Add 1 tsp fermented shrimp paste and 1 tbsp palm sugar pound again until the mixture is smooth.
Add ½ tbsp chicken bouillon powder, ½ tbsp fish sauce, and ¼ cup of coconut milk and mix until a curry paste sauce forms.
In a large bowl, add 1 egg and whisk until beaten.
Add 12 oz catfish filet in with the egg, and then add the curry paste. Mix until the fish is coated.
Line a bowl with the banana leaves or make banana leaf baskets (following the instructions above).
Remove the stems from the Chinese Broccoli and tear the leaves up with your hands. You need about 3 cups of ripped leaves.
Add the shredded 1 bunch Chinese broccoli to the bottom of the banana leaf baskets. Then add the fish on top of the greens, and pour 1 ½ tsp of coconut milk on top of each basket.
Top with kaffir leaves and Birds eye chili.
Place the banana leaf baskets in the steamer basket of a large pot, with water underneath the steamer basket. Steam for 20-30 minutes until the curry is a mousse-like consistency.
In a small bowl, mix 2 tsp cornstarch and 2 tbsp coconut milk and mix to combine.
Pour it over the steamed fish, cover, and cook for 5 more minutes.
Serve with rice and enjoy!