Whisk together milk and eggs. Add melted butter, stir and set aside.
In a large bowl mix flour, sugar and salt.
Add egg mixture to the flour and whisk until evenly mixed.
Heat 10-inch non-stick pan(s) over medium-high heat.
Pour about ¼ cup batter into the hot pan. Immediately tilt and swirl the pan so the batter coats the entire surface. Cook until lightly browned, about 1 minute.
Flip crepe, cook for another 1½-2 minutes. Transfer to a plate.
Put pan back on heat, add more oil if needed. Use a folded paper towel to wipe away excess oil and any flecks of crepe left behind.
Continue cooking until all the batter is used.