Pickled red onions are a flavorful and versatile condiment made by soaking thinly-sliced red onions in vinegar and spices. The pickling process gives the onions a tangy and slightly sweet taste, while also preserving their crisp texture.

If you like pickling recipes you must try my Easy Homemade Refrigerator Pickles or Unfried Everything Pickles.
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Why You Will Love This Recipe
Pickled red onions are commonly used as a topping for tacos, sandwiches, salads, and burgers, adding a burst of flavor and color to any dish. They can also be used as a garnish for cocktails or as a side dish for grilled meats and vegetables.
Additionally, pickled red onions can be made easily at home with just a few simple ingredients and stored in the refrigerator for up to a month.
Ingredients Needed

Red onions - Use a mandolin to make thinly sliced red onions. They look more like a purple onion to me.
Apple cider wine vinegar - I prefer the taste of apple cider vinegar over any of the other vinegar.
Sugar - to make these zero points leave out the sugar, but the sugar gets dissolved when boiling the vinegar so they end up being zero points.
Use your favorite sweetener in place of sugar.
See recipe card below for a full list of ingredients and measurements.
How to Make Pickled Red Onions
Step 1: Slice the red onions really thin using a knife or a mandolin and set aside.

Step 2: Bring vinegar, lime juice, and sugar to boil in a small saucepan. Stir well and let all the sugar dissolve.

Step 3: Pour vinegar mixture over the onion mixture and let sit for at least 30 minutes. or refrigerate for up to 2 days. Store in airtight container.

What To Do With Pickled Onions
Are you wondering what to do with pickled red onions try some of these options.
Add them to a sandwich like these Grinder Salad Sandwiches or Tunacado Sandwiches Viral Tiktok Recipe.
PIckeled onions are good for Blackstone Smashed Cheeseburgers or Air Fryer Burgers with French Fries.
Use them on toppings for tacos - AIr Fryer Baja Fish Tacos with Pickled Onions
Add them to salads like this Big Mac Salad or Italian Pasta Salad.
Recipe FAQs
To store them, place them in a jar with a lid on it or an airtight container. They get better the longer they sit in the fridge and can last for 2 to 3 weeks.Â
Heat up the vinegar in a sauce pan and add the sugar and salt until it's all dissolved. Set aside until cooled. Then add the thinly sliced onions.
If you tried this Pickled Red Onions or any other recipe on my website, please please leave a 🌟 star rating and let me know how you go in the 📝 comments below. I love hearing from you! Follow along on Tiktok @jennarecipediaries
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Pickled Red Onion Recipe
- Prep Time: 20min
- Total Time: 20min
- Yield: 6 1x
Description
Pickled onions can be added on top of all your favorite foods including burgers, nachos, fish tacos, and salads.Â
Ingredients
1 small red onionÂ
1 cup of apple cider vinegarÂ
2 tablespoons of lime juiceÂ
1 tablespoon sugar
Instructions
Thinly slice red onions using a knife or mandolin. Add them to a jar or airtight container.Â
Bring vinegar, lime juice, and sugar to boil in a small saucepan.
Pour vinegar mixture over the onions and let sit for at least 30 minutes. or refrigerate for up to 2 days.Â
Notes
myWW: 0 points (all 3 plans)
Yes, there is sugar in this recipe but it gets dissolved in the vinegar and it isn't much and that is why I don't count it. I only use a couple of them on top of some recipe and not the whole recipe.
- Category: Easy
- Method: Stovetop
- Cuisine: American
Nutrition
- Calories: 25
- Sugar: 3g
- Fat: 0g
- Saturated Fat: 0g
- Unsaturated Fat: 0g
- Carbohydrates: 5g
- Fiber: 0g
- Protein: 0g
Keywords: pickled red onion recipe
Jenna says
The post states 2 to 3 weeks. 🙂
Jeaneen says
So if you put them in a jar and they seal how long will they last until they are opened(I know after you open them they have to be put in the fridge).