Steps
1. Mince the fish fillet finely or blend in a food processor until smooth.
2. In a bowl, combine tapioca starch, wheat flour, baking powder, salt, pepper, and sugar.
3. Add the minced fish, egg white, chopped garlic, and ice-cold water to the dry mix.
4. Mix thoroughly by hand or with a stand mixer until the mixture is sticky and elastic.
5. Rest the mixture in the fridge for 30 minutes to firm up.
6. Heat oil in a deep pan to 170°C (340°F).
7. Shape the mixture into small balls using wet hands to prevent sticking.
8. Fry the meatballs in batches until golden brown and cooked through, about 4-5 minutes.
9. Drain on paper towels and serve hot to enjoy the crispy exterior and tender interior.