Follow these simple steps to create your own delightful Chicken Manchurian:

1. Marinate Chicken: In a bowl, mix chicken pieces with ginger-garlic paste, soy sauce, vinegar, salt, black pepper, cornflour, and all-purpose flour. Let it marinate for about 20 minutes.
2. Heat Oil: In a deep pan, heat oil over medium-high heat for frying the chicken.
3. Fry Chicken: Once the oil is hot, carefully drop in the marinated chicken pieces. Fry them until golden brown and crispy. Remove and set aside on paper towels to absorb excess oil.
4. Cook Vegetables: In the same pan, add a little more oil if needed. Sauté chopped onions, bell peppers, and slit green chilies until slightly tender.
5. Make the Sauce: Add in the chili sauce, tomato ketchup, and sesame oil. Stir well until combined.
6. Combine Chicken and Sauce: Add the fried chicken to the pan. Toss everything together on medium heat for a few minutes to coat the chicken in the sauce.
7. Adjust Seasoning: Taste and add salt or pepper as needed.
8. Garnish: Once well mixed, garnish with chopped spring onions and coriander.
9. Serve Immediately: Transfer to a serving dish while hot.

Each step is designed to ensure that your Chicken Manchurian turns out perfectly cooked and full of flavor!