Pickled red onions are simple to make. Just mix thinly sliced red onion, vinegar, salt, sugar, and water in a jar, shake, and let sit. They’re ready to add a tangy kick to any dish!

Add these pickled onions to Chicken Tinga Tacos or toss them on a hearty Tuna Salad.

Pickled Red Onions recipe in a jar.

Pickled Red Onions Recipe

I’m obsessed with pickled red onions—they’re my go-to topping for almost everything, and I always have a jar in the fridge.

This simple recipe takes just minutes but adds loads of flavor to meals.

During my weekly meal prep, I always make a batch of these pickled onions along with some brown rice, sweet potatoes, and my favorite sauce. The quick pickling method is fuss-free—just toss everything in a jar, shake, and refrigerate. Easy peasy!

All the ingredients in this recipe prepped out for easy assembly.

Pick Out A Good Red Onion

Here are some easy tips for picking a good red onion:

  1. Look for firm onions without soft spots or blemishes.
  2. Choose onions with shiny, smooth skin, avoiding wet or moldy ones.
  3. Pick onions that feel heavy for their size, indicating freshness.
  4. Avoid onions with a strong or bad smell for longer-lasting pickled onions.

Quick Tip

Quick pickling doesn’t require sterilizing jars since the onions will be eaten pretty quickly. 

Now Here’s What You’ll Need To Pickle It:

  • Red Onion: Slice it very thinly for best results.
  • Red Wine Vinegar: Provides a tangy flavor; you can use white vinegar in a pinch.
  • Water: Helps balance the acidity of the vinegar.
  • Salt: This enhances the flavor.
  • Sugar: Adds a touch of sweetness; you can adjust the amount based on your preference.
The red onions being thinly sliced and all the pickling ingredients being poured on top of them in a jar for these pickled red onions.

How To Use Pickled Red Onions

Variations

Can I add other spices or flavorings? Absolutely! Customize your pickled red onions with spices like peppercorns, garlic, or herbs like thyme or dill for extra flavor.

A forkful of pickled red onions being picked up out of the jar.

Storage

Quick pickled red onions are good for 1 up to 2 weeks in the fridge if stored in an airtight container.

More Toppings To Jazz Up Your Meals:

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Pickled Red Onions

Quick Pickled Red Onions are a game-changer! Just toss sliced red onions with vinegar, a touch of salt and sugar, and water in a jar. Shake, let them sit, and voilà—tangy, crunchy magic for tacos, salads, or anything else!
Prep Time: 10 minutes
Total Time: 10 minutes
Servings: 1 cup

Equipment

  • Mandoline slicer or sharp knife

Ingredients 
 

  • 1 cup red onion very thinly sliced
  • 2 tablespoons red wine vinegar
  • 2 tablespoons water
  • 1/2 teaspoon salt
  • 1-1/2 up to 2 teaspoons granulated sugar add to preference

Instructions 

  • Trim the ends off the onion, slice it in half, and remove the outer layer.
  • Using a Mandoline Slicer set to a very thin setting, thinly slice the onion. (If you don’t have a slicer, use a sharp knife to slice as thin as possible.)
  • Place the sliced onions in a jar along with the rest of the ingredients.
  • Secure the jar’s lid and shake well to mix the ingredients. Let the onions marinate in the fridge for at least 20 minutes.
  • Use the pickled onions as desired. Store leftovers in the fridge for 1 (up to 2) weeks.

Recipe Notes

How to Use Pickled Red Onions:
Storage: Store leftover onions in the fridge for up to 1–2 weeks.

Nutrition

Serving: 1serving | Calories: 11kcal | Carbohydrates: 2.4g | Protein: 0.2g | Sodium: 146.6mg | Fiber: 0.3g | Sugar: 1.4g

Nutrition information is automatically calculated, so should only be used as an approximation.

Meet Chelsea


Hello, and welcome to Chelseaโ€™s Messy Apron! Iโ€™m Chelsea, the recipe developer, food photographer, and writer behind the site. Iโ€™m passionate about creating simple, reliable, and delicious recipes that anyone can make.

Thanks for stopping byโ€”I hope you find something delicious to make!

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