01 - Separate the thinly sliced onions into individual rings and place them in a large mixing bowl.
02 - Combine all-purpose flour, cornstarch, salt, black pepper, and paprika in a separate bowl and mix thoroughly.
03 - Toss the onion rings in the flour mixture ensuring they are fully coated, then shake off any excess flour.
04 - Heat the vegetable oil in a deep pan or skillet to 350°F (175°C) over medium-high heat.
05 - Fry the coated onion rings in batches for 2 to 3 minutes until they turn golden and crispy, avoiding overcrowding.
06 - Remove the fried onions with a slotted spoon and drain on paper towels to remove excess oil.
07 - Serve immediately for optimal crispness or allow to cool for enhanced texture. Store cooled crisps in an airtight container for up to 2 days.