In a large pan, turn the heat to medium and heat the oil
Now add the cumin seeds, you should be able to hear them cooking and when you do, add in the chillies and garlic, give it all a good stir and cook for 1 minute
Now add the onion and cook for around 6 minutes, make sure you keep stirring
Add in the turmeric and the coriander, once again give it a good stir and cook for 2 minutes
Now add in the potatoes and also the ginger, give it a good stir and cook for until the potatoes are virtually hot enough to eat
Add in the spinach and cook until the spinach is wilted
Transfer to bowls or plates to serve
For this saag aloo recipe, we've used fresh spinach because we prefer fresh but if you'd like to use frozen then after you've added the turmeric and coriander, place the spinach in, pop a lid on it and then cook for approximately 5 minutes.