Heat the ghee in a karahi, add the cashew nuts, raisins and almonds and fry till golden brown. Add the grated lauki and sauté for a few minutes. Add the milk and cook till the lauki is soft, mix in the green colour and stir well. Add the Milkmaid Sweetened Condensed Milk and stir continuously till the mixture is thick. Sprinkle the cardamom powder, mix well and remove from heat. Serve hot.