Put your pressure cooker on the saute setting and add the oil. Once the oil is hot add the onion, garlic, chilli and ginger and cook for a couple of minutes until softened.
Add the potatoes, coriander, cumin, garam masala and turmeric. Stir so that everything is coated in the spices, season with salt to taste. Add the spinach and enough water to reach the minimum line on your pressure cooker.
Cook on the stew setting for 3 minutes. Release the pressure and serve the saag aloo with rice and chopped coriander leaves.
Nutrition information is an estimate and will vary depending on the exact ingredients used.