01 -
Peel the onions and slice into ½-inch rings. Separate all rings and set aside.
02 -
In a mixing bowl, whisk together the flour, cornstarch, baking powder, salt, black pepper, paprika, and garlic powder. Gradually add sparkling water and whisk until smooth. Optionally, beat in the egg for additional crispiness.
03 -
Place the breadcrumbs in a shallow dish, ensuring they are ready for coating the onion rings.
04 -
Dip each onion ring into the prepared batter, letting the excess drip off. Then coat each ring with breadcrumbs, pressing lightly to ensure even adhesion.
05 -
Heat oil in a deep pan or fryer to 175°C (350°F). Fry the onion rings in batches for 2-3 minutes or until they turn golden brown and crispy. Remove and drain the onion rings on paper towels.
06 -
Sprinkle the onion rings with chopped parsley. Serve hot with your preferred dipping sauce, such as ketchup, ranch, or spicy aioli.