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🥘Recipes by Nani
Vegetarian

Simple Pickled Red Onions

These tangy and bright pickled onions are the perfect way to add a zesty crunch to almost any meal.

By Recipes By Nani· 🌍 American· July 19, 2026
Simple Pickled Red Onions
recipesbynani.com
Prep
10 minutes
Cook
0 minutes
Total
10 minutes
Serves
8

There is something so satisfying about having a jar of these bright pink onions waiting in the fridge. They add such a lovely pop of color and a sharp, vinegary kick that cuts through rich foods perfectly. You will find yourself reaching for them to top everything from morning avocado toast to hearty taco nights.

My favorite thing about this recipe is how quickly it comes together with just a few simple pantry staples. If you want a slightly softer onion, just let them sit in the brine for a few hours before eating. They truly are the best way to liven up a dish in a pinch.

🧺 Ingredients

  • 1 large red onion, thinly sliced
  • 1/2 cup apple cider vinegar
  • 1/2 cup warm water
  • 1 tablespoon sugar
  • 1 1/2 teaspoons sea salt
  • 1/2 teaspoon whole black peppercorns (optional)

👩‍🍳Instructions

  1. 1

    Thinly slice your red onion into half moons and pack the pieces into a clean glass jar.

  2. 2

    In a separate bowl or measuring cup, combine the warm water, apple cider vinegar, sugar, and salt. Stir until the sugar and salt have fully dissolved.

  3. 3

    Pour the liquid over the onions in the jar until they are completely submerged.

  4. 4

    Add the black peppercorns if you like a little extra spice.

  5. 5

    Seal the jar and let it sit at room temperature for about an hour. You can eat them right away, but they taste even better after chilling in the fridge for a few hours.

💡 Tips

Store these onions in a sealed glass jar in the refrigerator for up to two weeks. If you like extra flavor, feel free to add a smashed garlic clove or a sprig of fresh herbs like oregano to the jar.

Made this recipe? Let us know how it went.

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