Onion ring
Crisp, deep-fried circles of coated onion
Onion rings are circular slices of onion encased in batter or seasoned breadcrumbs, then fried in hot oil until crisp and golden. Originating in Britain and popular in the United States, they are eaten at lunch or dinner as a side dish or enjoyed on their own as a savoury snack.
- The earliest known recipe was published in 1802 by British cook John Mollard.
- Deep-frying transforms sharp onion compounds into sweet-tasting bispropenyl disulfide.
- Onion strings use vertically cut onions rather than horizontal cross-sections.
What is Onion ring?
An onion ring is a cross-cut circle of onion coated in a light batter or breadcrumb crust and cooked in hot fat. Frying alters the vegetable's natural sulfur compounds, breaking down propanethial oxide into bispropenyl disulfide. This chemical transformation produces a gentle sweetness beneath the brittle, savoury shell. They typically emerge from the oil crisp, airy, and golden brown. While most versions use whole rings cut across the bulb, some kitchens prepare them using pureed onion paste pressed into circle shapes.
Where does Onion ring come from?
The earliest documented instructions appeared in 1802 within a British collection by John Mollard, titled The Art of Cookery Made Easy and Refined. His version called for circular onion slices dipped in a batter laced with grated Parmesan, fried in lard, and paired with a butter and mustard sauce. Numerous fried onion recipes surfaced across the early twentieth century, showing techniques that evolved from plain naked frying to layers of flour, milk, egg, breadcrumbs, and seasoned batters.
How is Onion ring made?
Preparation begins by slicing whole onions horizontally so the concentric layers slip apart into distinct hoops. Cooks dip these rounds into either a wet flour batter or coat them in beaten egg, milk, and dried breadcrumbs. Seasoning may be whisked directly into the wet mixture. The coated rings are lowered into deep, bubbling fat or oil until the crust hardens and browns, leaving the onion tender inside.
How and when is Onion ring eaten?
Onion rings are served across casual restaurants, diners, and pubs. They frequently arrive alongside burgers, grilled meats, or fish as an alternative to fried potatoes. Diners often order baskets of them as a hot starter, a bar snack, or eat them completely on their own without accompaniments.
Kinds of Onion ring
Several adaptations alter the cut of the vegetable. Slicing the bulb vertically instead of horizontally produces long, thin onion strings. Cutting sweet onions into thick wedges yields onion chips. Modern mass-market preparations may use seasoned onion paste shaped into uniform circles before battering and frying.
Questions people ask about Onion ring
What is an onion ring made of?
It consists of sliced onion rings coated in batter, flour, or breadcrumbs and fried in hot fat. Some variations are shaped from blended onion paste.
Where do onion rings come from?
The earliest published recipe appeared in the United Kingdom in 1802, with modern varieties later becoming widespread across the United States.
Why do onion rings taste sweet?
The heat of deep frying breaks down propanethial oxide in the raw onion into bispropenyl disulfide, creating an aromatic, sweet flavour.
Good reading and sources
The facts on this page come from the Wikipedia article "Onion ring", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryThali rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes, and it is not dietary or allergy advice: recipes differ from cook to cook. If something is wrong, tell us. Last refreshed 2026-10-04.
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