Soak the lentils and cumin seeds in sufficient water overnight. Grind along with ginger, spinach, chilies and required quantity of water into a smooth paste. Add the oats powder, all the powdered spices and extra water. Mix well. Keep aside for 15-20 minutes. Heat a tawa / griddle and grease with some oil. Sprinkle water and once it sizzles off, wipe clean with a kitchen towel. Now pour a ladleful of the batter and spread it in a circle with the back of the ladle. Drizzle some oil around.