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Quick Pickled Red Onions – Without Sugar!

  • Author: Nyssa Tanner
  • Total Time: 20 minutes
  • Yield: 8 servings 1x
  • Diet: Vegan


These quick pickled red onions are SO easy to make and so delicious! It only takes 5 minutes and a handful of pantry friendly ingredients (no sugar!) that you probably already have on hand. An easy and healthy condiment that you’ll want to add to everything from tacos to burgers. Vegan, gluten free, paleo, Whole30, keto / low carb, and made without sugar!


  • 1 large red onion, thinly sliced
  • ½ cup red wine vinegar, or another light tasting vinegar like white wine vinegar, champagne vinegar, rice vinegar, or apple cider vinegar
  • ½ cup water
  • 1 1/2 teaspoons kosher salt – you may want to reduce this amount slightly if using regular table salt


  1. Using a sharp knife or a mandoline thinly sliced the red onion. The thinner the onion slices the quicker the onions will pickle! Transfer onions to a bowl or jar with enough room for the onions to be submerged once the pickling liquid is added.
  2. In a glass measuring cup or bowl mix together the red wine vinegar, water, and kosher salt until the salt is dissolved.
  3. Pour the pickling liquid over the sliced onion and use a fork or spoon to press the red onion under the liquid so they’re completely submerged. If they’re not quite submerged add an additional splash or two or red wine vinegar until just barely covered with the pickled liquid. As they pickled the onions will also release some liquid which will result in an increase in pickling liquid as they sit.
  4. Transfer to the refrigerator for at least 30 minutes or up to overnight before using. The longer the onions sit in the pickling liquid the more “pickled” they will be. When they’re ready they will appear slightly translucent and have a bright jewel toned pink hue.


Pickled red onions will keep for at least a week in the refrigerator (if not longer!) but the texture is best if enjoyed within the first 4 or 5 days. 

  • Prep Time: 5 minutes
  • Refrigerated Time: 15 minutes +
  • Category: condiment
  • Method: refrigerated
  • Cuisine: mexican

Keywords: pickled red onion, condiment, mexican, tacos, healthy, gluten free, sugar free, whole30, paleo