A Chicken Saag is also known as a Chicken Saagwala or even chicken Sag; it is essentially a chicken and spinach curry. It is medium-spiced and really easy to cook at home!
Peel and roughly chop the onion, then throw it into a mini blender.
Peel the garlic cloves and add them to the blender with 2-3 tablespoons of water, then blend them to a smooth paste.
Heat a 30cm or 12" frying pan over a high heat and add half of the ghee, add the onion and cook for 2-3 minutes to drive off the water, then reduce the heat to medium and cook for 10 minutes until golden brown.
Add in the ground coriander, Kashmiri chilli powder, turmeric, amchoor and garam masala and stir for 30 seconds.
Pour in the tomato passata and 250ml (1 cup) of water and cook for 5 minutes over a medium heat. Use this time to dice the chicken into bite-sized pieces.
Add the chicken to the pan with salt and pepper, stir, add a lid, and cook for 20 minutes over a medium heat.
Remove the lid and add the spinach, yes there is a lot, don't worry it will cook down, then return the lid and cook until the spinach has wilted, this will take 3-4 minutes.
Peel and grate the ginger.
When the spinach has wilted, remove the lid, add the remaining ghee and freshly grated ginger, and crush in the dried fenugreek leaves, then, stir and cook for 5 more minutes or until the curry thickens.