Pickled red onions are a vibrant, tangy, and crunchy condiment that can elevate any dish. Whether you’re topping tacos, burgers, salads, or sandwiches, these easy-to-make pickled onions add a burst of flavor and color.

In this detailed guide, we’ll walk you through everything you need to know to make perfect pickled red onions at home, including variations, tips, and serving suggestions.

Recipe Preparation Equipment

Before you start, gather the following equipment:

A medium-sized saucepan
A sharp knife and cutting board
A mason jar or airtight glass container
Measuring cups and spoons
A stirring spoon

What Do You Need to Prepare Pickled Red Onions?

Ingredients

2 medium red onions, thinly sliced
1 cup white vinegar (or apple cider vinegar for a milder flavor)
1 cup water
1 tablespoon granulated sugar
1 ½ teaspoons kosher salt
Optional: 1 teaspoon whole peppercorns, 1 bay leaf, or 1 teaspoon red pepper flakes for added flavor

How to Make Easy Pickled Red Onions Step-by-Step ?

Step 1: Prepare the Onions

Peel and thinly slice the red onions. You can use a sharp knife or a mandoline slicer for even, thin slices.

Step 2: Make the Pickling Brine

In a saucepan, combine the vinegar, water, sugar, and salt. Heat over medium heat until the sugar and salt dissolve completely. Do not boil the mixture.

Step 3: Pack the Onions

Place the sliced onions into a clean mason jar or airtight glass container. If using, add peppercorns, bay leaf, or red pepper flakes for extra flavor.

Step 4: Pour the Brine

Carefully pour the warm pickling brine over the onions, ensuring they are fully submerged.

Step 5: Cool and Store

Let the jar cool to room temperature, then seal it with a lid. Refrigerate for at least 1 hour before using. For best results, let them sit overnight.

Variations

Pickled red onions are incredibly versatile. Here are some fun variations to try:

Sweet Pickled Onions: Add 2 tablespoons of honey or maple syrup to the brine for a sweeter flavor.
Spicy Pickled Onions: Include 1-2 sliced jalapeños or a teaspoon of chili flakes for a spicy kick.
Herbed Pickled Onions: Add fresh herbs like thyme, rosemary, or dill to the jar for an aromatic twist.
Citrus Pickled Onions: Add strips of orange or lime zest to the brine for a citrusy note.

Cooking Notes

Vinegar Choice: White vinegar is classic, but apple cider vinegar adds a milder, fruity flavor.
Onion Thickness: Thinly sliced onions pickle faster and have a better texture.
Storage: Pickled red onions can last up to 2-3 weeks in the refrigerator if stored properly in an airtight container.

Serving Suggestions

Pickled red onions are a versatile condiment. Here are some ideas:

Top tacos, burgers, or hot dogs for a tangy crunch.
Add to salads, grain bowls, or sandwiches for extra flavor.
Serve alongside grilled meats or fish as a refreshing side.
Use as a garnish for soups or stews.

Helpful Tips

Use a mandoline slicer for uniformly thin onion slices.
Always use a clean, sterilized jar to prevent contamination.
If the onions taste too sharp, soak them in cold water for 10 minutes before pickling.
For a quicker pickle, use hot brine and let the onions sit for 30 minutes before serving.

Tips for the Best Pickled Red Onions

Use fresh, firm red onions for the best texture.
Adjust the sugar and salt to suit your taste preferences.
Let the onions pickle for at least 1 hour, but overnight for maximum flavor.

Prep Time, Cooking Time, and Total Time

Prep Time: 10 minutes
Cooking Time: 5 minutes
Total Time: 15 minutes (plus 1 hour pickling time)

Nutritional Information

(Per 1 tablespoon serving)

Calories: 5
Protein: 0g
Sodium: 50mg

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FAQs

1. How long do pickled red onions last?

Pickled red onions can last up to 2-3 weeks in the refrigerator when stored in an airtight container.

2. Can I use other types of vinegar?

Yes! Apple cider vinegar, rice vinegar, or even red wine vinegar can be used for different flavor profiles.

3. Why are my pickled onions not pink?

The onions will turn pink naturally due to the acid in the vinegar. If they’re not pink, ensure they are fully submerged in the brine.

4. Can I reuse the pickling brine?

It’s not recommended to reuse the brine as it may lose its acidity and flavor.

Conclusion

Pickled red onions are a simple yet transformative condiment that can enhance a wide variety of dishes. With just a few ingredients and minimal effort, you can create a tangy, crunchy topping that adds both flavor and visual appeal to your meals. Whether you’re a seasoned cook or a beginner, this recipe is foolproof and customizable to suit your taste.

Try it today and enjoy the burst of flavor pickled red onions bring to your table!