Chicken Manchurian

Name: Chicken Manchurian
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Asian, Chinese
Ingredients: 500 g Chicken; 1 Egg; 50 g Cornflour; 1 tsp Salt; 1 tsp Black Pepper; 2 tbsp Oil; 3 cloves Garlic (Chopped); 2 Green Chillies; 1/2 Bell Pepper (Red); 1/2 Bell Pepper (Green); 1 Onion (Red); 1 tbsp Soy Sauce; 1 tbsp Vinegar; 1 tbsp Chilli Sauce; 1 tbsp Oyster Sauce; 2 tbsp Tomato Ketchup; 1 tsp Sugar (Brown); 100 ml Water; 1 tbsp Cornflour; Spring Onions