Pickled red onions are straight up the best way to use any leftover red onions you might have. It’s totally cool to  make small batches, and they usually last for 3-4 weeks in the fridge.

Oh, and did I mention they’re AWESOME on tacos, sandwiches, pizza, nachos, and many  many many other things? While you could totally substitute red onions with white or yellow ones, I just think that the color from using the red ones always look stunning. Check out this simple technique on how to pickle red onions the right way.


2 medium red onions
1 teaspoon sugar
1 teaspoon salt
3/4 cups rice vinegar, white wine vinegar, or apple cider vinegar

How To Pickle Red Onions

Slice the onions. Start 2 or 3 cups of water on to boil in a kettle. Peel and thinly slice the onion into approximately 1/4″ moons. Peel and cut the garlic clove in half.
Dissolve the sugar and salt. In the container you will be using to store the onions, add the sugar, salt, vinegar and flavorings. Stir to dissolve.
Par-blanch the onions. Place the onions in the sieve and place the sieve in the sink. Slowly pour the boiling water over the onions and let them drain.
Add the onions to the jar and stir gently to evenly distribute the flavorings.
Store. The onions will be ready in about 30 minutes, but are better after a few hours. Store in the refrigerator. They will keep for several weeks but are best in the first week.

How To Pickle Red Onions
How To Pickle Red Onions
Pickled red onions are the perfect way to use up your leftover red onions. You can make small batches, they last for 3-4 weeks in the refrigerator, and they’re pretty awesome on tacos, sandwiches, pizza, nachos, and lots of other things.

Yield:2 cups



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  1. What a fabulous way to use up some red onions! It can be such a shame to throw out (or hopefully compost) unused onions, and finding such a great use for them is so satisfying. And few things make a better garnish for sandwiches, wraps, or even salads. Thanks for sharing!

  2. I am so obsessed with pickled onions! The color and the taste is something I can’t really begin to compare anything to. I love putting them on sandwiches and even using them as a garnish for meals I make for the family. Thank you for your helpful and informative guide on how to make them myself at home! I’ll be sure to check in in the future when I decide to make them.

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