In a large bowl add in flour, salt and white sugar. Mix with a whisk until well combined. Add in eggs, vanilla and melted butter (make sure the butter isn't too hot), and mix with a whisk until well combined and smooth with no lumps.
Stream in milk while continously whisking. Once all the milk is added in, whisk for a few more seconds until everything is well combined and smooth.
Refrigerate the batter for 1 hour before making the crepes (see note 1).
Once ready, place an 8 inch crepe pan or regular non-stick pan over a medium heat and once heated, brush with a little butter (see note 2 if using a different sized pan).
Use a 1/3 cup measuring cup to scoop out just under a 1/3 cup of the crepe batter (give the batter a little stir with the measuring cup in between every crepe as the flour can settle to the bottom). Lift up the heated pan and pour the batter into the centre of the pan, while swirling the pan to help the batter get to the edges of the pan. Keep swirling the pan until the batter sets/stops moving.
Allow to cook for about 30-45 seconds (every stove is different so timing may vary) or until you can see the edges begin to get dry and slightly golden. Don't let it brown too much (see note 3). Use a thin spatula to lift up the edge of the crepe, and then use your hands to lift the crepe about half way and carefully slide the spatula underneath. Then lift up the crepe with the spatula and flip it over. Do not drag the spatula under the crepe when trying to lift it up from the pan as this will cause them to break (see video for visual demonstration).
Allow to cook for another 15-20 seconds, or until you see some slight browning on the bottom. Once ready use the same technique as above to lift up the crepe and place it onto a wire rack to cool. The crepes will still be delicate while hot, so be careful when handling them.
Repeat the above steps until all the crepes are done. You should end up with about 13 crepes.