Super Crispy Homemade Onion Rings

Slice the large white onion into 1/4 inch thick rings. Separate the rings.

Place the panko breadcrumbs in one shallow bowl. In a separate shallow bowl, whisk together the all-purpose flour, corn starch, cayenne pepper, ground black pepper, and salt.

Gradually pour the cold sparkling water into the flour mixture while whisking continuously until a smooth, thick batter forms.

Dip the onion rings into the batter, one or two at a time, ensuring they are fully coated. Let excess batter drip off.

Transfer the battered onion rings to the bowl of panko breadcrumbs. Shake the bowl or use your hands to coat them thoroughly. Set aside on a plate.

Pour oil into a deep pan or Dutch oven and heat to 350°F (177°C).

Carefully add the coated onion rings to the hot oil in batches, being careful not to overcrowd the pan. Fry for 2-3 minutes per side, or until golden brown and crispy.

Remove the fried onion rings from the oil using a slotted spoon and place them on a wire rack set over a baking sheet to drain any excess oil.

Serve the super crispy onion rings immediately with your favorite dipping sauce or condiment.