Mix the sugar, flour and water together; mix well. Mix for 5 minutes. Batter will be thin, like a crepe batter.
Let the batter sit for 5 minutes.
Heat a griddle or tawa pan.
Add one tablespoon of the mustard oil and heat to smoking on the griddle.
Add about ⅓ cup of the batter to the heated griddle, and spread it around into a large circle. Use fingers or the back of a spoon to spread the batter thinly and evenly over the surface of the griddle.
Cook for about 1½ minutes on the first side; the edges will looked cooked. Flip the chila over and cook another 1 minute on the other side.
Watch the heat, and adjust so the chilas don't burn.
Keep cooking the chila, one by one, adding a tablespoon of mustard oil each time.
Notes
You could probably treat these just like a crepe and add fruit and heavy cream to them.