Homemade Pickled Red Onions

homemade picked red onions
homemade picked red onions

This homemade pickled red onions recipe is a staple recipe you should make regularly at home. It comes together so quickly and pickled red onions are the perfect condiment to anything fatty or umami that needs something acidic to cut the flavor. This homemade pickled red onions recipe is something you probably see on top of a carnitas taco at a taco stand!

Homemade Pickled Red Onions

The onions will be ready in about 30 minutes, but are better after a few hours. Store in the refrigerator.

how to make quick pickled red onions

You will need:

  • 1 red onion
  • apple cider vinegar (about a half cup??) – enough to cover the sliced onions
  • 1/2 tsp sugar
  • 1 tsp salt

Use a mandoline if you have one to slice the onion really thin, or cut really thin, and put in a jar

Cover the onion slices with vinegar, salt and sugar

Close the jar and shake it, let it sit for at least 30 min.

what is the best mandoline to use for slicing onions?

I love this Benriner mandoline!

how long to pickled red onions last?

Pickled red onions will keep for several weeks, but are best in the first week.

homemade picked red onions

Homemade Pickled Red Onions

Mimi Newman
Homemade Pickled Red Onions
5 from 1 vote
Prep Time 5 mins
Chilling time 30 mins
Total Time 35 mins
Course Preserves
Cuisine American
Servings 16 ounces
Calories 5 kcal



  • 1 red onion
  • 1/2 cup of apple cider vinegar
  • 1/2 tsp of sugar
  • 1 tsp of kosher salt
  • Water


  • Cut one red onion in quarters, through the root to the tip.
  • Slice the red onion on a mandoline very thinly.
  • Add in vinegar, salt and sugar. Add water as needed to completely cover the onions with the brine.
  • Let sit for 30 minutes and enjoy


Calories: 5kcalCarbohydrates: 1gProtein: 1gFat: 1gSaturated Fat: 1gSodium: 146mgPotassium: 15mgFiber: 1gSugar: 1gVitamin C: 1mgCalcium: 2mgIron: 1mg
Keyword how to make quick picked red onions, onions, pickled red onions
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