1-Getting Started with Slicing and Mixing: First, slice your onion into 1/4-inch rings, making sure to separate them carefully so they hold their shape. This step is key for that classic look in your deep fried onion rings. Next, in a mixing bowl, combine the flour, cornstarch, baking powder, and salt. Slowly whisk in cold water until you get a smooth batter that coats the back of a spoon.

2-Heating and Frying for Perfection: Heat your vegetable oil in a deep pan until it reaches 375°F, which is the sweet spot for frying without making things greasy. Dip each onion ring into the batter, ensuring it’s fully coated before gently placing it into the hot oil. Fry in small batches for 2-3 minutes, turning occasionally, until they’re golden brown and crispy.

3-Final Steps: Once done, remove the rings with a slotted spoon and let them drain on paper towels. Finally, serve them right away with your favorite dipping sauce, and feel free to tweak for dietary needs like using gluten-free flour.