Shisk the milk, water, eggs, and melted butter in a bowl; then gradually add the flour and blend until the batter is smooth.
Allow the batter to rest in the refrigerator for at least 20 minutes.
Heat crepe pan or a large frying pan over low heat with a little butter.
Add a few tablespoons of batter to the hot pan and swirl until the bottom of the pan is covered with batter; cook for one minute or until the crepe is lightly browned and then flip and repeat.