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A Clear bowl filled with pickled onions and a jar of pickled onions in the background. A fork with some pickled onions on a blue surface.

How to Make Pickled Onions

  • Author: Vicky & Ruth
  • Total Time: 10 minutes
  • Yield: 2 cups 1x


Pickled onions are incredibly quick and easy to make. By pickling them, the sharp onion flavor mellows down and you're left with a nice, tangy onion flavor that is great to use on tacos, sandwiches, burgers, salads and more.


  • 2 medium red onions, sliced thin
  • 1 cup boiling water
  • 1 tsp sea salt
  • 1 tbsp sugar ( you can also use agave, maple syrup or honey)
  • 1/2 cup apple cider vinegar (you can also use white or red wine vinegar)
  • Optional.  Choose all or some of the following seeds and spices: whole peppercorns, red pepper flakes (if you like some heat), coriander seeds, cumin seeds, fennel seeds, mustard seeds


  1. Prepare a large, clean jar with a lid, or the container you're planning on using to store the pickled onions.  Make sure the container has a tight lid.
  2.  Combine the boiling water, salt and sugar in a heat proof container. Stir well until the salt and sugar have dissolved completely. Add the vinegar.
  3. Place the sliced onions inside the prepared  jar or container, and add the water and vinegar mixture. Add the seeds and spices, if using
  4. Leave the jar on the counter for 30 minutes to cool. Place it in the fridge for up to two weeks
  5. The pickles are ready to in after 30 minutes, but they will taste even better after a couple of hours in the fridge
  • Prep Time: 10
  • Category: Condiment
  • Method: Pickling
  • Cuisine: American

Keywords: how to make pickled onions, vegan, gluten-free

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