Wash chicken wings. Wipe dry. Put them in a big bowl.
Crush lemongrass, garlic, shallots and green chilies. Put them in a mixer. Add 1/3 cup of water. Blend well. Strain. Mix the juice with marinade ingredients. fold into chicken wings. Stir well. sprinkle a little plain flour on chicken wings.
Bring oil to the boil. Put in chicken wings. Turn to low heat. Deep fry until golden brown. Dish up. Drain well. dip in sweet and sour sauce or spring onion with oil when serve.