Buttermilk Fried Onion Rings
Golden, ultra-crispy buttermilk fried onion rings with a light, crunchy panko coating and tender, sweet onions inside. Marinated overnight in tangy buttermilk and hot sauce, then fried to deep golden perfection.
🍽️ Servings: 2
Ingredients
- 1 large onions
- 100 g buttermilk
- 25 g water
- 7.5 g hot sauce
- 3 g fine salt
- 45 g all-purpose flour
- 70 g panko breadcrumbs
- neutral oil (for frying)
Instructions
- Peel the onion and slice it into rings about 1 cm thick. Separate the rings and remove the thin inner membranes so the onion layers separate cleanly after frying.
- In a bowl combine the buttermilk, water, hot sauce and salt. Whisk until smooth.
- Add the onion rings to the buttermilk marinade, making sure they are fully submerged. Cover and refrigerate overnight or for at least 6 hours. This step softens the onion and seasons it all the way through.
- Prepare three stations: the bowl with the marinated onions, a bowl with flour and a bowl with panko.
- Take the onion rings directly from the marinade and coat them in flour. Return them briefly to the buttermilk mixture, then coat thoroughly in panko, pressing gently so the crumbs adhere well.
- Heat frying oil to 180°C / 350°F.
- Fry the onion rings in batches until deeply golden and very crisp, about 3 minutes.
- Transfer the fried onion rings to a rack or paper towels to drain excess oil. Serve immediately while hot and crunchy.
Tips & More Info
Marinate the onion rings in buttermilk overnight
A long soak in buttermilk gently softens the onion and mellows its sharpness. The acidity also lightly seasons the layers and helps the coating cling better during frying.
Remove the thin inner membranes from the rings
These papery layers cause the coating to slide off. Removing them allows the onion layers to separate cleanly and hold the crust more evenly.
Use a flour → buttermilk → panko coating sequence
The first flour layer absorbs surface moisture and creates a dry base. Returning the ring briefly to the marinade acts like glue, allowing the panko to stick and form a thicker, crunchier crust.
Press the panko gently onto the onion rings
Light pressure helps the breadcrumbs adhere firmly, preventing bald spots in the coating and giving the rings a more even, golden crust.
Keep the oil at a steady 180°C / 350°F
This temperature crisps the panko quickly while preventing excessive oil absorption. Too low and the coating becomes greasy; too hot and the crumbs burn before the onion softens.
Fry in small batches
Crowding the pan drops the oil temperature and leads to uneven browning. Smaller batches keep the heat stable and produce consistently crisp onion rings.
Drain on a wire rack for the crispiest result
A rack allows steam to escape and oil to drip away, keeping the coating dry and crunchy instead of trapping moisture underneath.