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Pickled Red Onions

Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026

Meets Patient’s editorial guidelines

These vibrant pickled red onions are a versatile staple that every home cook should have in their repertoire. This low-sugar recipe relies on the natural brightness of red wine vinegar and a touch of salt to transform raw onions into a tangy, crisp garnish. The pickling process mellows the sharp bite of the onion, resulting in a beautifully pink condiment that adds a punch of acidity and a pop of colour to any plate.

Great for those following a balanced diet, these quick pickles are far healthier than many shop-bought varieties that are often laden with sugar. Serve them piled high on grilled fish, tucked into tacos, or tossed through a fresh seasonal salad. They offer a simple way to elevate leftovers and add a professional finish to your everyday weeknight meals.

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Ingredients for Pickled Red Onions

  • 2 tablespoons red wine vinegar

  • 1/2 teaspoons kosher salt

  • 1/2 small red onion, thinly sliced

How to make Pickled Red Onions

Bring vinegar, salt, and 240ml water to a boil in a small saucepan. Remove from heat. Stir in onion. Let cool. Drain before serving.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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