Crispy Fish in Chili Sauce

Name: Crispy Fish in Chili Sauce
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Asian, Chinese
Ingredients: 500 g fish fillets; 1 cup plain flour; 1/3 cup cornflour; 1 egg white; 3/4 cup water; oil (for deep-frying); 1 tablespoon oil; 1 tablespoon grated green ginger; 3 garlic cloves; 1/2 cup tomato sauce; 1/3 cup chili sauce; 2 teaspoons sugar; 1 tablespoon soy sauce; 2 teaspoons dry sherry; 1/2 cup water