In a large bowl, whisk together cornmeal, flour and salt. Whisk in water to make a thin batter. Stir in okra and onions.
Over medium heat, add clarified butter to a cast iron skillet. Use a small ladle to pour batter onto skillet. Pan should be hot enough to make batter sizzle. Cook until underside is browned, about 3 to 4 minutes, then flip and brown on the other side. Repeat with additional batter, adding more butter as necessary.