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Pickled Red Onion

These easy pickled onions are completely no-cook, made with 5 simple ingredients, & prepped in just 5-minutes of active time. They'll add the perfect amount of tangy zip to just about anything. Ideas and recipe below ⬇️


  • 1 red onion, thinly sliced (use a mandoline if you have one)

  • 1/2 cup apple cider vinegar

  • 1 tablespoon granulated sugar

  • 1 1/2 teaspoons salt

  • 1 cup hot water (not boiling)


  1. Slice the red onions as thin as you can. I use a mandoline but a sharp knife works well, too.

  2. Stuff all the red onions in the jar of your choice. A bowl works too but a jar is easier to store in the fridge.

  3. In a measuring cup, combine apple cider vinegar, salt, sugar, and warm water. Stir to dissolve the sugar and salt. Pour the pickling mixture over the sliced onions, making sure they are immersed in the liquid, and let them set for an hour.

  4. After an hour, cover and store in the fridge for up to three weeks.

What To Put Pickled Red Onions On

  • Fish Tacos are a great option

  • Green Salads: top on any salad to add some flavor

  • Avocado toast: Add some brightness to your green toast:)

  • Add to a charcuterie board as a side, goes so well with meats and cheeses as well as cornichons

Make It Your Own:

  • Substitute a different kind of vinegar.

  • Make the onions sweeter or not as sweet.

  • Add red pepper flakes if you like things spicy.

  • Sliced garlic cloves add pungent flavor.

  • Try adding whole spices (peppercorns, fennel seeds, cumin seeds, mustard seed), a bay leaf, or sprigs of fresh herbs.

  • Double the recipe or halve the recipe.


  • Other types of onions can be used instead of red onions.

  • Substitute maple syrup or honey for the granulated sugar if desired. For sweeter pickled onions, use more sweetener, for tangy pickled onions, use less.

  • If you prefer, substitute plain white distilled vinegar, rice vinegar, or white wine vinegar for the apple cider vinegar. A combination is fine, too.

  • Recipe is easily doubled. Make sure you have enough clean jars with lids. Sliced onions should be completely immersed in vinegar solution.

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