Place the chilies, ginger, and 4 tbsp (60 ml) whey or water in a blender or food processor bowl fitted with the metal blade, process to a smooth purée, then add the 0. 5 tbsp (3. 5 g / 0.18 oz) ground coriander, 0. 5 tsp (1. 5 g / 0.18 oz) turmeric, 0. 5 tsp (1. 5 g / 0.18 oz) ground cumin, and 0. 25 tsp (0. 5 g / 0.18 oz) paprika, pulsing to blend well before setting aside.
Heat the 6 tbsp (90 ml) ghee or oil in a nonstick wok or 5-quart (4. 7 liter) saucepan over moderate heat until hot but not smoking, gently add the 6 oz (170 g) paneer cheese cubes, and fry for about 5 minutes, turning constantly with a gentle hand to evenly brown them on all sides before removing with a slotted spoon to set aside.
Carefully add the wet spice purée to the hot oil, pack in the 32 oz (907 g) fresh chopped spinach leaves, reduce the heat slightly, cover the pan, and cook for exactly 8 minutes.
Using two forks, turn the spinach over so the cooked leaves on the bottom change places with the leaves on top, then cover and cook for another 8 minutes (Note: if you are using 20 oz / 570 g of frozen, defrosted spinach, skip this step and cook it for only a total of 8 minutes).
Add the 0. 5 tsp (1 g / 0.04 oz) garam masala, 1 tsp (6 g / 0.21 oz) salt, the fried paneer cubes, and the 3 tbsp (45 g / 1.59 oz) cream or cream cheese, cover, and continue to cook for about 5 minutes, ensuring you stir everything well before serving hot with flatbreads.