In a bowl, combine fish paste, scallions, white pepper, sesame oil, sugar, and water. Mix well.
With wet hands, shape the fish paste into small balls.
Heat oil in a wok or deep saucepan over medium heat. Fry the fish balls until golden brown and cooked through. Remove and drain on paper towels.
In a separate pan, mix all the sauce ingredients and bring to a boil.
Add the fish balls into the sauce and stir to coat evenly. Cook for 1–2 minutes.
Serve hot as an appetizer or main dish with steamed rice.