5 Minute Prep Time – With only a few simple ingredients, this recipe is super quick to prep!
Versatile – The meals that they can be added to are endless, from topping sandwiches to salads to wraps and more.
Easy to Make – This pickled onion recipe has just a few steps, and it’s as easy as slicing an onion and boiling some vinegar!
Ingredients For Pickled Red Onions
Super easy ingredients that you may even have on hand already!
Red Onion – This recipe works with white onions as well.
White Vinegar – This is just distilled white vinegar, but you can jazz it up with flavored vinegars if you wish.
Kosher Salt – An important ingredient to contrast the tanginess. If using table salt, cut the amount in half.
White Granulated Sugar
How To Pickle Red Onions
Get a detailed list of ingredients & instructions in the recipe card below.
It takes just minutes to prep these easy quick pickled onions and they can be ready to eat in under an hour!
Make the Brine – Add the vinegar, water, salt, and sugar to a small pot and bring to a boil, covered, over medium-high heat. Stir until the sugar and salt is dissolved. Set the pickling liquid aside to cool for a few minutes.
Slice Onions – While the vinegar mixture cools, thinly slice the red onions. I like to use a mandoline, but you can use a sharp knife. Place the sliced onions into a 16-ounce heat-proof mason jar (or bowl).
Pour Over Brine – Carefully pour the slightly cooled vinegar brine over the onions and set aside to cool to room temperature.
Store or Serve – After the onions have cooled to room temperature, screw on the jar lid and store in the fridge for up to 2 weeks. Or if you want to use the pickled onions right away, just let them sit for 30-60 minutes before enjoying.
How long do quick pickled onions last?
They will keep for up to two weeks in the fridge. Although with how versatile they are, I doubt they’ll last that long!
Do you have to boil the vinegar for pickling?
Boiling the vinegar brine helps the flavors meld together and lets the sugar and salt dissolve. It only takes a few minutes to do and makes a big difference.
What does pickled red onion taste like?
Pickled onions are slightly soft, but still have a nice crunch to them. They have a vinegary tanginess with a spicy bite that you’d expect from a red onion.
How To Use Pickled Onions
They are great additions to a variety of dishes! Here are some of our favorite meals to add them to:
Bring vinegar, water, salt and sugar to boil in a small, covered pot over medium-high heat. Stir until the sugar and salt are dissolved. Set aside to cool slightly while you slice the onions.
Thinly slice red onions (using a mandoline if you have one) and place into a 16-ounce heat-proof mason jar or bowl.
Carefully pour the hot vinegar mixture over the onions. Set aside to cool to room temperature, then screw on the lid and store in the refrigerator for up to 2 weeks. OR let sit for 30-60 minutes then add to your salads, sandwiches, tacos, etc.
They can be stored in a sealed mason jar or other type of airtight container in the fridge for up to 2 weeks. They will not hold up well to freezing.
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Kristin Maxwell is the creator and main recipe developer, writer, and photographer of Yellow Bliss Road. A self-taught cook and self-appointed foodie, she specializes in easy, flavorful and approachable recipes for any home cook.