Start by gently massaging your skin-on fish fillet with toasted sesame oil, a sprinkle of salt, and a dash of black pepper. Set the fish aside on a steaming plate.

Julienne the ginger, onion, carrot, and scallions. Mince the garlic and shallots if using. Organize everything for easy cooking.

In a small pot, heat 1 tablespoon of olive oil over medium heat. Add minced shallots and garlic, sauté until fragrant (1-2 minutes). Stir in julienned ginger, soy sauce, and black pepper. Simmer for 2-3 minutes, then remove from heat.

Arrange sliced onion, julienned ginger, and carrot over the seasoned fish. Cover the plate with foil and place in a steamer or pot with a steaming rack. Steam for 8-9 minutes, or until fish flakes easily.

After the initial steaming, pour the prepared soy sauce mixture over the fish and sprinkle with scallions. Re-cover and steam for an additional 4-6 minutes until fully cooked.

Once cooked, transfer to a serving dish and enjoy hot, alongside fluffy rice.