In a steamer or wide pot put some water to boil. (About 3 cups of water)
Grease 1, 8 inch steel plate which has a rim. The plate size should be according to your steamer vessel. It should fit in properly and you should be able to lift it.
Grease the plate with oil.
Put the plate without the batter in the steamer. It heats up the plate and helps in making the soft and nice vadi.
Once the water comes to a boil, remove the plate.
Pour the batter on the prepared greased plate. If using traditional method, keep the prepared vadi logs, on the greased plate.
Cover and steam for 15-20 minutes.
Once done remove and let it cool for 10 minutes.
After 10 minutes, cut it into desired shape.
One can enjoy them hot steamed too. If required a tadka of mustard and sesame seeds goes well with this.