World Kitchen
Quick Pickled Red Onions
Quick Pickled Red Onions are an indispensable secret weapon in any modern kitchen. By flash-marinating in a warm, sweet-and-sour brine, the onion completely sheds its harsh, burning bite and sharp aftertaste, turning into a crunchy, juicy, and delicate topping. Furthermore, the acidity triggers a stunning chemical reaction, turning the onion spears a vibrant, neon-pink hue that instantly elevates the visual presentation of any plate. This universal component partners beautifully with rich proteins, brightens up grain bowls, and injects essential texture into tacos, burgers, sandwiches, and wraps, acting as a flawless flavor balance.
Dishday
Recipe overview
- Total time
- 10 min
- Prep
- 5 min
- Cooking
- 5 min
- Servings
- 10
- Difficulty
- Easy
- Cuisine
- World Kitchen
Nutrition
per serving
- Calories
- 25 kcal
- Protein
- 0.3 g
- Fat
- 0.1 g
- Carbs
- 6 g
- Fiber
- 0.5 g
Step by step
Method
- 01
Peel the red onions
Peel the red onions. Halve them from root to stem, and use a sharp knife or a mandoline to shave them into paper-thin half-moons.
- 02
Pack the shaved onions tightly into a clean, dry 500 ml glass…
Pack the shaved onions tightly into a clean, dry 500 ml glass jar, gently pressing down with your fingers to maximize space without crushing the fibers.
- 03
Prepare the brine
Prepare the brine: in a small saucepan, combine the water, chosen vinegar, sugar, and salt. Place over medium heat.
- 04
Bring the liquid to a bare simmer, stirring continuously unti…
Bring the liquid to a bare simmer, stirring continuously until the sugar and salt crystals melt completely into the liquid, then remove from heat.
- 05
Carefully pour the hot brine over the onions in the jar, ensu…
Carefully pour the hot brine over the onions in the jar, ensuring the liquid fully submerges all the onion layers to the very top.
- 06
Let the jar sit uncovered at room temperature for about 20-30…
Let the jar sit uncovered at room temperature for about 20-30 minutes. You will watch the onion layers rapidly bloom into a gorgeous neon-pink color.
- 07
Once cooled to room temperature, seal the jar tightly with a…
Once cooled to room temperature, seal the jar tightly with a lid and place in the refrigerator. The onions are ready to use as soon as they are thoroughly chilled.
Dishday
Useful advice
Cooking tip
A mandoline slicer is your best friend for this recipe. The thinner you shave the onion spears, the quicker they will pickle and the more tender their texture will be in assembled wraps or tacos.
How to serve
Always lift the onions out of the jar using a fork, letting the excess liquid drain off so you don't compromise the structure or crispiness of your bread or tacos.
How to store
Keep the pickled onions submerged in their brine inside a sealed glass jar, stored strictly in the refrigerator. They retain their perfect crunch, color, and tang for up to 2 weeks.
Note
Apple cider vinegar or white wine vinegar is ideal for this base—they offer a much softer, fruitier flavor profile compared to harsh distilled white vinegar.
