Take the flour in a bowl. Add a sprinkle of salt, sift with a fork to aerate the flour.
Add the milk, whipped eggs and vanilla extract, whisk well to make a smooth batter. Care should be taken that there are no lumps in the batter. The batter needs to be a medium-thick one with pouring consistency. If the batter is too thick, feel free to add a little milk.
Keep aside, 15 minutes or so.
Heat a frying pan, brush with very little oil.
Give the batter a hearty stir. Take a small ladle and pour 11/2 ladle full of batter onto the middle of the pan, spread it evenly around the pan by rotating it. (This needs to be done real quick before the batter begins to set.) Cook till the batter just begins to set.
When the crepe turns slightly brown around the edges, carefully loosen the ends with a flat spatula and flip. Cook for another 2-3 minutes.
Slide the crepe onto a plate.
Repeat the process with the remaining batter, brushing the pan with oil as and when needed. (The portions I have specified make about 18 crepes.)