Make 3 diagonal slits on both sides of the fish with a knife to allow even and quicker cooking and place it on a heatproof steaming tray or plate.
Spread out lemongrass slices on top of the fish.
Set the Bosch Combi-Steam Oven to Steam programme and preheat at 100°C for 5 minutes.
Afterwards, place the fish inside and steam it for about 10–15 minutes, until it is nicely cooked. Use a fork to flake the thickest part of the fish. If the flesh comes off the bone easily and appears white, it is ready to be served.
While waiting, chop garlic and chili with a Bosch MaxoMixx hand blender.
In a bowl, mix brown sugar, lime juice, fish sauce, soy sauce and oyster sauce. Adjust the dressing to taste before setting it aside. * Chef’s tip: You can also use green or red chili according to your taste preferences. For extra tanginess, zest the skin of one lime and add into the mix.
When the fish is cooked, pour the reserved liquid from the hot fish stock into the dressing and add in spring onions and cilantro.
Drizzle the dressing over the steamed fish and serve hot with steamed jasmine rice or tossed noodles.