Crepes: In a bowl, combine flour and salt. In a separate bowl, whisk together eggs, milk and melted butter. Whisk egg mixture into flour mixture until smooth. Cover and refrigerate for 1 hour. Strain mixture into a clean bowl.
Heat a small non-stick skillet or crepe pan over medium heat. Brush pan with some oil.
Pour approximately 1/4 cup batter into centre of pan, swirling pan to coat. Cook for about 1 minute or until bottom is a light golden colour. Flip and cook for 30 seconds. Transfer to plate. Repeat with remaining batter. (Make-ahead: Stack crepes between waxed paper, wrap and refrigerate for up to 3 days or freeze for up to 1 month.)