Now, remove the frying oil from the wok and add 2 tablespoons of fresh cooking oil. Heat it over high flame.
Add chopped ginger, garlic, cilantro stems, green chillies, and the white parts of scallions. Also stir in of green chilli paste. Stir fry everything for 10–15 seconds, just until aromatic, making sure nothing burns.
Toss in the onion petals and bell pepper cubes. Add a small pinch of salt, and stir-fry over high heat for 1–2 minutes until the vegetables begin to char slightly at the edges. They should remain crisp and vibrant, not soft or wilted.
Mix in the cornstarch slurry. Add ⅓ cup to ½ cup of water or vegetable stock, to the pan. Let it simmer for 2–4 minutes, so that the sauce thickens and coats the vegetables nicely. The consistency should be thick enough to cling to the paneer and vegetables,not too runny and not entirely dry.
Return the fried paneer to the wok along with the chopped green parts of scallions and a handful of fresh cilantro. Toss everything together thoroughly, so that the paneer is well coated in the rich, spicy sauce.
Stir-fry for another 1–2 minutes over high heat. Your chilli paneer is now ready to serve. Enjoy it hot, straight from the wok, the paneer stays crisp only if served immediately.