2 large sweet onions
1 egg, slightly beaten
2/3 c. water
1 tbsp. vegetable oil
1 tsp. lemon juice
1 c. all-purpose flour
1 1/2 tsp. baking powder
1 to 1 1/4 tsp. salt
1/8 to 1/4 tsp. cayenne pepper
cooking oil for deep frying

Cut onions into 1/2 slices. Separate into rings.