Put the ginger, cumin, turmeric, ground coriander and chilli in the pan, and fry everything for 1 min. Add the tomatoes, mashing them with the back of a spoon and simmer everything for 5 mins until the sauce smells fragrant. Add a splash of water if it’s too thick. Season well. Add the peas and simmer for a further 2 mins, then stir in the paneer and sprinkle over the garam masala. Divide between two bowls, top with coriander leaves and serve with naan bread, roti or rice.