Sweet potato (Japanese yam / Ratalu) - 2 cup,
Milk - 3 -4 cup,
Sugar - 1/3 cup,
Cardamom powder - 1/4 tsp,
Ghee (clarified butter) - 1 tbsp.
Steam sweet potatoes until it cooks well. Let it cool down.
Grate them and measure 2 cup.
Heat 1/2 tbsp ghee along with milk in sauce pan and let it boil.
Now add grated sweet potato and cook until half the quantity.
Add sugar and mix well.
Cook and stir until mixture becomes thick and lumpy.
Now add rest of the ghee along with cardamom powder and mix well. Cook for couple of minutes and serve.
Sugar can be replaced with jaggery.
Amount of sugar depends on natural sweetness of sweet potato.
Add pinch of saffron to get nice color and flavor.
Add any kind of nut of your choice.
Milk gives nice creamy texture and flavor to this dish so adjust accordingly.