01 -
Peel and trim onions; slice uniformly into 6 mm thick rings. Separate individual rings, discard very small inner rings. (Optional) Soak rings in ice water for 15–20 minutes, then drain and pat completely dry.
02 -
In a bowl, whisk together 65 g flour, 1/2 teaspoon salt, and 1/4 teaspoon black pepper until combined.
03 -
In a separate bowl, combine 100 g flour, cornstarch, and baking powder. In another small bowl, beat egg, then whisk in milk, vinegar (if using), and hot sauce (if using). Pour wet ingredients into dry and whisk until smooth. Season with 1/2 teaspoon salt and 1/4 teaspoon black pepper; adjust consistency by adding milk or flour if needed.
04 -
Combine panko, smoked paprika, garlic powder, onion powder, cayenne pepper (if using), 1 teaspoon salt, 1/4 teaspoon black pepper, and MSG (if using). Mix thoroughly.
05 -
Set up dredge bowls: dry dredge, wet batter, then seasoned panko. Dredge onion rings first in dry flour mixture, shake off excess. Dip into wet batter, allowing excess to drip off. Coat thoroughly with seasoned panko, pressing gently for full coverage. Place breaded rings on a baking sheet without overcrowding.
06 -
Refrigerate breaded rings for 15–30 minutes to help the coating adhere and set for optimal crispness.
07 -
Preheat oven to 200°C. Line baking sheets with parchment paper. Arrange onion rings in a single layer, do not overcrowd. Lightly spray or brush rings with neutral oil. Bake for 15–20 minutes, flipping halfway, until golden and crisp.
08 -
Preheat air fryer to 190°C. Lightly oil basket and arrange onion rings in a single layer. Air fry for 8–12 minutes, shaking or flipping every 4–5 minutes until golden and crispy. Cook in batches if necessary.
09 -
Transfer cooked onion rings to a wire rack over a baking tray to cool slightly and maintain crispness. Serve immediately with desired dipping sauces.