These quick pickled red onions are one of those little recipes that make a surprisingly big difference. They're tangy, slightly sweet, crunchy, and turn the prettiest shade of bright pink after a day in the fridge. I throw them on tacos, grain bowls, sandwiches, salads, burgers, eggs... honestly, almost anything that needs a little extra life.
What I love most is how they rescue boring leftovers. A plain chicken bowl from yesterday suddenly feels like a completely different meal once you add a handful of pickled onions. It sounds dramatic, but I've genuinely saved many lazy lunches this way.
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Julia's Why-You'll-Love-It List
- I've been making homemade pickled vegetables for years, especially asparagus and cabbage. They're much cheaper than buying jars from the store, and I love knowing exactly what's going into them. No preservatives, no unnecessary ingredients, just simple food with plenty of probiotic goodness.
- I probably make these every couple of weeks, sometimes more during summer when we're eating lots of salads, burgers, and grilled food. They take about 10 minutes to make, and the flavor is so much fresher than anything I've bought.
- My kids were suspicious of them at first because of the bright pink color. Now they dig through bowls looking for extra onions. That was definitely not something I saw coming.
- And here's something I learned the hard way: don't judge them after two hours. They're good, sure. But after a day or two? That's when they become really good. The onions soften slightly, the color gets brighter, and the whole jar somehow tastes better.
Ingredients
- Vinegars - After making this recipe more times than I can count, I've become a little opinionated about it. I strongly prefer using some red wine vinegar along with white vinegar. The flavor feels a little rounder and less sharp. I tested batches both ways, and the mixed-vinegar version disappeared much faster.
- Onion - Slice the onions thinly. Thick slices stay crunchy much longer and don't absorb the brine as evenly. Knife is fine, but a mandoline will safe you time and slices will be thin. (I like this one, it's way safer than the old school one). It cuts prep time in half. Choose firm onions with smooth skin. Thin slices pickle faster and develop the prettiest bright pink color.
- Sweetener - Maple syrup, honey, or sugar all work here, but I almost always reach for maple syrup. I don't use a lot of granulated sugar in my cooking and prefer using maple syrup or honey whenever possible. The amount is small, but it helps balance the vinegar and gives the onions a smoother flavor.
📋 You can find the full ingredient list in the Recipe Card below the article.
How To Make World's Fastest Pickled Red
- Thinly slice the onions and pack them into a clean 16-ounce jar. Add the garlic and peppercorns if using.
- Warm the water, vinegars, sweetener, and salt in a small saucepan over medium heat until the salt dissolves, about 1 minute. Let the brine cool slightly, then pour it over the onions. Gently stir through.
- Press the onions down gently so they're mostly submerged. Leave the jar on the counter until cooled to room temperature, then cover and refrigerate.
- The onions are ready after about 2 hours, but I prefer waiting 24-48 hours. That's when they become bright pink and taste their best.
- Add them to tacos, burgers, sandwiches, grain bowls, salads, eggs, or any meal that needs a little extra tang and crunch.
What I Used For This Recipe
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All-Clad Stainless Steel Sauce Pan with Lid 3 Quart
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How To Use Them
- Tacos and burrito bowls
- Burgers and sandwiches
- Avocado toast
- Grain bowls
- Quinoa salads
- Mediterranean bowls
I especially love them on grain bowls because they add crunch and acidity without needing extra dressing.
FAQ
You can enjoy them right after they are chilled (30 min or so), HOWEVER, I do recommend waiting at least 2 hours, or for perfect flavor 24-48 hours.
The color develops gradually as the onions sit in the brine. Give them more time in the refrigerator.
They stay fresh in the refrigerator for about 2 weeks when stored in clean jars.
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Recipe Card
Quick Pickled Red Onions
Ingredients
Method
- Slice the onions: Thinly slice the red onions and pack them into a clean 16-ounce mason jar. If using garlic cloves and peppercorns, add them to the jar as well. I like using a mandoline for super thin slices, but a sharp knife works just fine.2 medium red onions
- Make the brine: In a small saucepan, combine the water, white vinegar, red wine vinegar, sweetener, and salt. Warm over medium heat, stirring until the salt and sweetener dissolve, about 1 minute.½ cup water, ¼ cup distilled white vinegar, ¼ cup red wine vinegar, 1½ teaspoons salt, 1 tablespoon maple syrup
- Pour over the onions: Let the brine cool for a few minutes, then carefully pour it over the onions. Press the onions down gently with a spoon so they're mostly submerged in the liquid.
- Cool and refrigerate: Leave the jar on the counter until it cools to room temperature. Pop on the lid and transfer it to the fridge.
- Let the magic happen: The onions are good after about 2 hours, but I think they're much better after 24-48 hours. That's when they turn bright pink, soften slightly, and develop that tangy flavor I love.
- Enjoy: Add them to tacos, burgers, sandwiches, grain bowls, salads, eggs, or honestly anything that needs a little extra zip.
- If you love this recipe, please leave a 5 star rating, thank you!
Nutrition
Notes
- A 16-ounce jar yields about 12 servings, depending on how generously you pile them onto tacos, sandwiches, and bowls.
- For the best flavor and color, let the onions sit in the fridge for at least 24 hours before serving.
- I prefer using a combination of white vinegar and red wine vinegar. The flavor is less sharp and gives the onions a beautiful bright pink color.
- Maple syrup and honey both work well here. I usually use maple syrup because it's what I have on hand.
- Slice the onions as thinly as possible. Thin slices absorb the brine faster and have a better texture.
- If your onions aren't fully submerged at first, don't worry. They'll soften and settle into the brine after a few hours.
Storage
- Store the pickled onions in a sealed jar in the refrigerator for up to 2 weeks.
- The flavor actually improves after the first day or two.
- Always use a clean fork when removing onions from the jar to help them stay fresh longer.
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Let us know how it was!Note: Nutrition information is estimated and varies based on the products used.
Full Nutrition Disclaimer can be found here.
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