Preheat
deep fryer or heat cooking oil in a deep saucepan or pot to
375 degrees F. Place sliced onions in small batches in a bowl
and add seasoned flour. Toss onions in seasoned flour while
breaking apart. Shake dredged onions well to remove excess flour
and carefully add to hot oil. Fry until golden brown and crispy.
Transfer to a large plate lined with paper towels. Season with
salt and repeat until all onions are fried.