Whisk together milk, flour, beer, salt, and eggs to form a smooth, rather thin batter. Place cheese curds, about 6 or 8 at a time, into the batter, stir to coat, and remove with wire strainer. Shake the curds a time or two to remove excess batter. Deep fry the curds until golden brown, 1 or 2 minutes. Drain on paper towels; serve hot.