Number of people
Peel and slice the onions.
Separate the onion rings.
To make the batter, in a bowl mix the flour and salt together.
Make a well in the centre and add the egg yolk, milk and oil.
Beat vigorously until smooth and lump free.
Gently fold in the stiffly beaten egg white.
Dip the onion rings in the batter.
Deep fry for about 5 to 6 minutes.
Serve as a side dish.