Crisp and Lacy Onion Rings


There are all sorts of tricks for making deep-fry batters both delicate and crisp. Sometimes, recipes call for beating in beer or club soda (the little air bubbles lighten the mixture), or adding vodka (alcohol boils off more quickly than water, enhancing a batter’s texture). For these onion rings, Richard Blais uses both strategies and amplifies their effect by aerating the batter in a siphon. The results are some of the laciest, crunchiest onion rings you’ll ever taste. This batter is equally good on all kinds of fried foods, like chicken, pork cutlets, fish and other vegetables. Slideshow: Fried Foods 

Crisp and Lacy Onion Rings
Photo: © John Kernick
Total Time:
30 mins
2 to 4


  • 1 3/4 cups all-purpose flour

  • 1/2 cup plus 1 tablespoon rice flour

  • Kosher salt

  • 1/2 teaspoon baking soda

  • 1 cup light ale or lager

  • 1/2 cup vodka

  • Vegetable oil, for frying

  • 1 medium sweet onion, sliced crosswise 1/2 inch thick and separated into rings


  1. In a bowl, whisk 3/4 cup of the all-purpose flour with the rice flour, 1 1/2 teaspoons of salt and the baking soda. Whisk in the beer and vodka until the batter is very smooth. Strain the batter, then pour it into the canister of a 1-pint iSi Gourmet Whip Plus siphon. Seal the siphon and charge it with one iSi cream (N20) cartridge according to the manufacturer’s instructions. Shake the siphon to distribute the gas. Repeat with a second cream cartridge.

  2. In a large saucepan, heat 2 inches of oil to 350°. Put the remaining 1 cup of all-purpose flour in a shallow bowl. Dredge the onion rings in the flour. Working in 3 to 4 batches, shake off the excess flour and transfer the rings to a large bowl. Holding the siphon upside down, carefully press the handle to dispense just enough batter to coat the rings. Using tongs, lift the onion rings from the batter, allowing any excess to drip off, and carefully transfer them to the oil. Fry the onion rings until they are golden brown and puffed, about 3 minutes per batch. Drain on paper towels and season lightly with salt. Repeat with the remaining onion rings and batter; serve hot.


The 1-pint iSi Gourmet Whip Plus is sold on for $109; 24 cream (N20) cartridges are $17.

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