Fried Onion Rings

INGREIDIENTS
1 cup sifted plain flour
1 3/4 Tbsp salt
1 1/2 Tbsp baking soda
1 egg yolk
2/3 cup milk
1 Tbsp salad oil
1 egg white (folded in last)
Onions
Oil for deep frying

METHOD
Peel and slice onion 1/4 inch thick.
Separate the rings and cover with cold water for 30 minutes.
Drain rings completely and wipe dry.
Mix all ingredients except egg white and onion and oil for deep frying into a batter.
Dip each ring in the batter and deep fry in oil till brown and crisp.