Rinse the red lentils and place in a pot
Roughly chop the carrots and add to the lentils along with the stock. Cover with a lid and simmer for 20 minutes.
Add 1 Cup of the mango (if it is frozen let it soften for a few minutes in the hot liquid). Transfer to a blender or food processor and blitz into a smooth orange sauce. You can also use a stick immersion blender for this.
Heat oil in pan. Sauté onion until lightly coloured
Add garlic and ginger, sauté for a further 1-2 mins
Add all the dry spices and cook off for 1-2 mins (cumin, turmeric, cardamon, cinnamon)
Add the lentil carrot and mango sauce to the pan
Add the diced chicken, gently simmer for 30 mins. Stir every 10mins or so.
Add the remaining cup of cubed mango and the coconut milk (optional) simmer for a further 5 mins, to heat through
Season to taste with salt and pepper
Serve