Its Optional but wash the fish with vinegar to get rid of rawness and cleanse the fish.
Season fish with salt and pepper. A generous amount I would say. Then stuff fish with the above stuffing for the gut.
In a big frying pan with medium heat, add oil. After pan becomes heated add seasoning (Thyme, garlic, onion, scallion, pepper, pimento) and sauté until seasoning becomes translucent. Adding tomato is optional. I didn't have any so I cooked without.
Add fish to pot and reduce heat to medium-low. Then add butter to pan and cover to cook.
If fish becomes dry add 1 oz of water to the pot and cover. Let it cook until fish is tender.
Before fish is done, add Spinach and base the fish with the fish sauce. Cook for 2 minutes.
Serve and garnish with fish sauce and herbs.