Heat corn oil in a deep-fryer or large saucepan to 375 degrees F (190 degrees C).
Whisk together flour, beer, milk, eggs, and salt 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 a wire strainer. Shake the curds a time or two to remove excess batter.
Deep fry curds in hot oil until golden brown, 1 or 2 minutes. Drain on paper towels; serve hot.