Sweet potato halwa

I am a huge fan of halwas made out of vegetables. Not only does it satisfy the sweet tooth, with the milk and the veggies, it is much healthier than many other sweets. So when I had 250 gms of boiled sweetotatoes in the fridge, this was the first thing I thought of making. And I am glad I did.

Most of it is by 'andaz', bit worked beautifully well.

250 gms sweet potatoes boiled and mashed (I pressure cooked for about 20 mins on sim after the first whistle)
1/2 cup milk (andaaz)
1 tbsp ghee (can be less)
3-4 tbsp sugar
1 tbsp raisins
cardamon powder

Heat ghee in a non-stick, and once it has melted, add the sweet potatoes, and cook with constant stirring for about 2-3 minutes.
Add the milk (you need to add enough to cover the sweet potatoes, the sugar and the raisins, and cook on a low flame till the milk completely disappears.
Take off the fire, and stir in the powdered cardamon.
Serve chilled