Dhokar dalna (lentil fritters in potato & tomato gravy) from west bengal Recipe

Dhokar dalna (lentil fritters in potato & tomato gravy) is a traditional dish from the bengali cuisine that's purely satvik, which was originally created by the bengali widows who were not allowed to eat onion or garlic. Dhokas are the fried chana dal fritters that are lightly spiced and then simmered in a gravy made with tomatoes and ginger, spiced with cumin and coriander called dalna, a cooking term that means any vegetables cooked in a medium thick gravy seasoned with ground spices, specially with garam masala and a touch of ghee. The dhokas are such a delight and the dalna is so fragrant that you wouldn't even miss onion or garlic in here.