In a bowl mix together eggs and sugar and whisk until well combined.
Add milk and salt and mix well.
Finally add in the flour and whisk until you get a smooth runny batter.
Heat a tawa and smear it with butter.
Pour a ladle full of batter from the outer circumference so that the runny batter fills the inside of the pancake. Slightly distribute the batter where it is not there.
Cook on low flame until the bottom is slightly browned.
Flip the pancake and cook the other side also.
Remove it on to a board, apply dulce de leche and roll it or fold it.
Serve it warm.