Steam the catfish briefly, then cut into pieces. Marinate the fish with 1 tablespoon fish sauce, 2 teaspoons seasoning powder, 2 teaspoons shrimp paste, 1 tablespoon sugar, 1 tablespoon turmeric powder, and galangal juice. Mix well and let rest for 30 minutes. Cut the dill and scallions into pieces, slice the mushrooms thinly, and wash the fresh herbs and greens. Set everything out for serving.

Heat the grill and add oil. Toss the marinated fish with 2 more tablespoons of cooking oil, then place the fish and mushrooms on the grill. When the fish is almost done, add the dill and roasted peanuts.

To serve, put rice vermicelli noodles in a bowl, top with grilled fish, mushrooms, herbs, and dill. Spoon some prepared fish sauce over and enjoy. If you like, you can also serve with mixed shrimp paste for extra flavor.