Take wheat flour, rice flour, jeera, finely chopped ginger, finely chopped green chilli, finely chopped coriander leaves, finely chopped curry leaves and salt in a mixing bowl.
Add some water and buttermilk. Mix well so that no lumps are formed.
Mix and check the consistency. The batter should be thin like that of rava dosa batter. let it rest for 5 mins.
Heat a Tawa or nonstick pan. When the Tawa is hot, rub it with a drop of oil using an onion piece.
To the hot Tawa, sprinkle chopped onion. Pour a ladle full of wheat dosa batter in a circular motion. Start pouring the batter from the outside rim of tawa to inwards centre of tawa. As the batter is thin, it will become lacy.( The method of pouring this dosa is similar to rava dosa) .Smear a few drops of oil around the dosa.
Lid the pan and cook it on a medium flame. Cook till bottom side starts to turn golden brown. Once it becomes crisp, just fold and serve. No need to flip.Don't cook on high flame... else it won't turn crisp.
Remove from tawa and serve hot Wheat flour dosa with chutney/chutney powder or sambar.