Beat the egg white until it is foamy and fold it in quickly
Dip an onion ring in the batter. The batter should be about the consistency of very thick cream. It should coat and cling to the onion.
Drop it in hot oil preheated to 370F and fry until golden. The rings should float to the top of the oil within seconds after being added to it. If not they may be stuck on the bottom. Just gently move them with a long fork or something.
Hold the basket above the oil for a few seconds to drain.
Serve immediately
Notes
Nutrition information does not include the frying oil