Wash chicken wings and drain thoroughly. Dry with paper towels. Chop each wing along main joint into 2 pieces. Chop and discard tips if not eating.
12 chicken wings, about 1 kg
Peel ginger and rinse. Cut into small pieces. Pound finely. Squeeze to yield 2 tbsp juice.
70 g ginger
Peel garlic and shallots. Wash and pound finely.
1 clove garlic
Add ginger juice, garlic, shallots, light soya, oyster sauce, Cognac, salt and ground white pepper to chicken wings. Mix thoroughly.
3 shallots
Marinate chicken for 12-24 hours, refrigerated, turning over once every few hours.
2 tbsp light soya sauce, 3 tbsp oyster sauce, 1 tbsp Cognac, ¾ tsp salt, ¼ tsp ground white pepper
20-30 minutes before cooking, remove chicken wings from fridge to come to room temperature.
⅓ cup tapioca flour, oil for deep-frying
When you're ready to deep-fry, drain and discard marinade. Dredge chicken in tapioca flour, patting gently to remove excess.
Deep-fry wings immediately in hot oil over medium-high heat till golden brown and cooked (meat feels firm when pressed). Remove from oil. Increase heat to high. Reheat oil to just smoking. Deep-fry wings again, this time till just golden brown.
Drain wings on rack or sieve lined with paper towels.
Serve immediately with sweet or garlic chilli sauce. Meat should be juicy, fragrant and nicely seasoned; batter should be crisp and not oily.