1Melt the butter (it should be cooled before adding it to the batter, but still liquid)
2Whisk the eggs, sugar and salt
3Add the melted butter
4Add a little milk, then the flour and mix until you get a smooth batter
5Add the rest of the milk
6Once everything is mixed, let the batter rest for at least 30 minutes.
7Cook in a hot pan with butter. Wait a few minutes, then flip. Wait again, then place on a plate covered with plastic wrap, aluminum foil or other. Avoid leaving it in the open air.