- Rinse and clean the fish fillet and pat dry with paper towels. Rub the fish with sesame oil. Place the fish on a plate and steam over rapid boiling water for about 8-10 mins, until the fish is cooked.
- Meanwhile, combine all sauce ingredients in a small bowl and mix well. Set aside.
- In a pan, heat up oil over medium high and sauté garlic until just it turns slightly brown. Scoop 1 tbsp of hot oil and pour into the small bowl of sauce mixture. Then put in preserved radish into the pan with the remaining garlic and oil. Mix in dark soy sauce and fry until crispy and fragrant.
- Remove fish from steamer and discard any water secreted from the fish after steaming. Pour sauce mixture over the fish and top with the fried crispy radish and garlic. Garnish with coriander and chillies. Serve immediately with steamed rice.