In a medium bowl, whisk together the eggs, milk and salt.
2. Heat the butter in an omelet skillet or pan over medium heat until hot. You have to tilt the pan to coat its bottom with the butter. Pour the egg mixture into the skillet and cook for 1 minute, stirring once halfway through.
3. Place the skillet spatula on top of the omelet and use gentle pressure to fold it over in half. Slide out onto a serving dish and serve immediately.