Ingredients

Equipment Needed

• •Large Dutch oven or heavy-bottomed pot (at least 5-quart capacity)
• •Deep-fry or candy thermometer
• •Spider skimmer or slotted spoon
• •Wire cooling rack set over a sheet pan

Instructions

1. 1

   Slice and separate the onions

   Trim the root and stem ends from each onion and peel away the papery skin. Slice crosswise into rounds about 1/2-inch thick. You want substantial rings here, not delicate wisps. Separate the slices into individual rings, keeping only the larger outer rings for frying. Reserve the smaller inner pieces for another use (they make excellent additions to tomorrow's scrambled eggs or a quick pickle).

   Rings smaller than 2 inches in diameter tend to overcook before the batter crisps properly. Save them for other cooking.
2. 2

   Prepare the dredging flour

   Place 1 cup of the flour in a wide, shallow bowl. This dry dredge gives the wet batter something to grip. Without it, the coating slides off in the oil, leaving you with naked onion and floating batter debris. Set this bowl near your frying station.

3. 3

   Mix the cold batter

   In a large bowl, whisk together the remaining 1 cup flour, cornstarch, baking powder, salt, smoked paprika, garlic powder, cayenne, and black pepper. Create a well in the center. Pour in the ice-cold beer and crack in the cold egg. Whisk from the center outward, gradually incorporating the dry ingredients until you have a smooth batter about the consistency of heavy cream. A few small lumps are fine. Overworking develops gluten, which makes the coating tough rather than crisp.

   Nest your batter bowl in a larger bowl filled with ice to keep it cold throughout the frying process. Temperature is everything.
4. 4

   Heat the oil

   Pour oil into a large Dutch oven or heavy-bottomed pot to a depth of 3 inches. Clip a deep-fry thermometer to the side. Heat over medium-high until the oil reaches 375°F. This takes 10 to 15 minutes depending on your burner. Resist the urge to rush it. Oil that isn't hot enough produces greasy, soggy results. Oil that's too hot burns the coating before the onion softens.

5. 5

   Set up the frying station

   Line a sheet pan with a wire rack (paper towels trap steam and make your crisp coating soggy within minutes). Arrange your workspace in order: onion rings, dredging flour, batter bowl nested in ice, then the hot oil with the rack-lined pan beside it. This assembly line prevents dripping batter across your stovetop and keeps the process moving efficiently.

6. 6

   Dredge, batter, and fry

   Working with 4 to 5 rings at a time, dredge each ring in the flour, shaking off excess. Dip into the cold batter, letting the excess drip off for a moment (count to three). Carefully lower into the hot oil, sliding rings away from you to prevent splashing. Fry for 2 to 3 minutes, flipping once with a spider or slotted spoon, until deeply golden on both sides. The batter will puff and form an irregular, craggly surface. That texture is exactly what you want.

   Don't crowd the pot. Too many rings at once drops the oil temperature dramatically, resulting in pale, greasy coating instead of crisp and golden.
7. 7

   Drain and season immediately

   Transfer fried rings to the wire rack and season immediately with a generous pinch of flaky sea salt while the surface is still glistening with oil. The salt needs that residual oil to stick. Allow the oil to return to 375°F between batches. This usually takes 1 to 2 minutes. Continue until all rings are fried.

8. 8

   Serve hot

   Pile the onion rings in a basket lined with parchment or stack them casually on a platter. Serve immediately with your preferred dipping sauce. These wait for no one. The contrast between shatteringly crisp coating and sweet, tender onion exists for perhaps ten minutes before physics begins its inevitable work. Eat them while they're honest.

Chef Tips

• •The beer choice matters less than its temperature. A straightforward American lager works perfectly. Save your craft IPAs for drinking. The hops can add unwanted bitterness to the batter.
• •If you don't have a deep-fry thermometer, test the oil by dropping in a small spoonful of batter. It should sink briefly, then rise immediately and bubble vigorously. If it sits on the bottom, your oil isn't hot enough. If it burns within 30 seconds, it's too hot.
• •For extra insurance against greasy rings, chill the flour for the batter in the freezer for 30 minutes before mixing. Cold flour, cold beer, cold egg. The trifecta of crisp.
• •Leftover batter keeps poorly, but any sweet onion rings you don't fry can be wrapped tightly and refrigerated overnight. Bring them to room temperature before dredging and frying.
• •Serve with malt vinegar for a nod to the British chip shop tradition, ranch dressing for pure Americana, or a chipotle aioli if you want some heat. All three work beautifully.

Advance Preparation

• •Onions can be sliced and separated up to 4 hours ahead. Store covered with a damp paper towel in the refrigerator.
• •The dry flour mixture for the batter can be whisked together a day ahead and stored airtight. Add the wet ingredients just before frying.
• •Onion rings do not hold well or reheat successfully. Plan to fry and serve immediately for the best texture.

Frequently Asked Questions

Nutrition Information

1 serving (about 85g)