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Home » Recipes » Holiday » Cinco de Mayo Recipes

Quick Mexican Pickled Onions Recipe

Published on: April 11, 2023 - Molly ThompsonLeave a Comment

Dairy Free RecipesDF
Gluten Free RecipesGF
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These Mexican Pickled Onions are the perfect tangy, crunchy bite to your favorite Mexican-Inspired meals. Pickling might sound time-consuming, but this Mexican pickled onions recipe is really easy—and they're done in under 20 minutes.

Once you see how simple and delicious the pickling process is, you’ll want to add them to all of your favorite Mexican dishes!

a bowl of mexican pickled onions in a bowl with ground pork tacos on the side

It's the perfect Cinco de Mayo recipe because it adds color, dimension. We love them on these easy carne asada tacos, easy Mexican chorizo tacos, or crispy buffalo cauliflower tacos.

If you're looking for ways to elevate your Mexican meal, try this easy healthy guacamole or mango pineapple salsa.

Why you Need to Try These Mexican Pickled Onions

  • Quick and easy: put together a quick batch of these Mexican pickled red onions as you're making your favorite Mexican cuisine. Or while you're stirring up a marg, like these strawberry hibiscus margaritas, blood orange margaritas, cucumber margaritas, or mango margaritas.
  • Healthy: Red onions are rich in anthocyanins, which are powerful plant pigments that have many health benefits, like helping protect against heart disease, certain types of cancer, and diabetes.
  • Budget-friendly: You'll already most likely have all of the ingredients at home -- and even if you don't, they're all extremely affordable and you'll undoubtedly use them again.
  • Perfect condiment: Not only are they a great addition to any authentic Mexican food, but they also work as an easy topping for your favorite burger, sandwich, or salad, adding plenty of color, flavor, and crunch.

Grab These Ingredients 

Here are the simple ingredients for these quick pickled red onions. Most are pantry staples and easy (and affordable) to find in grocery stores. Jump down to the recipe card for exact measurements.

mexican pickled onion ingredients on a countertop
  • Red onion: Red onions work best because they're naturally a little sweeter, but white onions, yellow onions, or sweet onions will work as well. Just make sure you’re always using fresh onions when pickling.
  • Lime juice: Lime juice is a staple in Mexican cooking, adding a bright, tangy flavor. Don't like a lot of lime? Lemon juice can also work in this recipe.
  • Red wine vinegar: Use distilled white vinegar or apple cider vinegar instead if you don't have red wine vinegar on hand.
  • Kosher salt: I prefer kosher salt, but any type will work for this recipe.
  • Sugar: Sugar will help to balance out the tanginess of the lime juice and vinegar. If you don’t have sugar, you can substitute it with maple syrup or honey.

How to Make Mexican Pickled Onions

The full printable recipe is below, but let’s walk through the steps with some photos and a video so you have a clear idea of what to expect. These Mexican onions are really easy and these step-by-step instructions will make sure they turn out every time.

Take your large red onion and slice it in half lengthwise from the root to the stem using a sharp chef's knife. Remove the outer layer or two of the onion, then lay each half of the onion flat on the cutting board.

Cut the root and stem off each side and thinly slice the onion into strips using either your knife or a mandoline. Use your hands to separate the layers of strips.

sliced red onions on a cutting board

Add the lime juice, red wine vinegar, salt, and sugar to a medium or large mason jar or glass container with a lid and stir it quickly to combine. Add the sliced onions, stir or close the lid, and gently shake to combine. The pickling liquid won’t fully cover the onions.

pickling liquid in a glass jar

Close the lid and pickle the onion for at least 20 minutes, stirring every 5-10 minutes to make sure all of the onions are coated in liquid.

Pro tip: If you’re using these in a recipe like these pork tenderloin tacos, make the Mexican pickled red onions first and let them marinate while you prepare your meal. The onions will be ready when your meal is ready to eat. If you want to make them a day ahead, the flavors will only develop more.

red onions with Mexican pickling liquid in a jar

Recipe FAQs

What kind of onion is best for street tacos?

White onions are most commonly used (especially when raw), but yellow and red onions can be used interchangeably.

What are pickling onions called?

Red pickled onions are called cebollas curditas in Mexico.

What is the point of pickled onions?

Red pickled onions add a sweet and tangy flavor to plenty of grain bowls, sandwiches, tacos, and salads.

Are pickled onions good for your gut?

Pickled red onions contain high amounts of good probiotics and digestive enzymes, helping to maintain healthy gut flora.

Recipe Variations for Mexican Pickled Onions

Since this is such an easy recipe, let's talk about the various ways to dress up your Mexican pickled red onions:

  • Spice up your brine by adding red pepper flakes, whole spices, or habanero peppers.
  • Give it more flavor with garlic cloves, a bay leaf, or fresh herbs like parsley, dill, or cilantro.
  • Add a little citrus with some orange juice.
mexican pickled onions in a clay bowl

Other Foods to Pickle 

Sometimes a salty, crunchy snack really hits the spot in the late afternoon. Especially while I’m cooking, I’m looking for something that won’t spoil my dinner but still curbs my appetite.

What could be better than an easy-to-grab, healthy pickled veggie to snack on? Make some extra brine and pickle any of these foods to have on hand as a snack, a tangy condiment, or a delicious addition to any number of dishes:

  • Cucumbers
  • Asparagus
  • Beets
  • Carrots
  • Radishes
  • Turnips
  • Cabbage
  • Mushrooms
  • Olives
  • Jalapeño peppers (If you are making these, be sure to add them to these bacon jalapeno deviled eggs)

Freezing and Storing Tips

Store leftover onions in an airtight container in the fridge for up to 3 weeks, making sure the onions are always covered in the brine. If you have extra brine, you can save it to add to homemade salad dressings.

three ground pork tacos with Mexican pickled onions and cilantro

If you make this recipe, I’d love for you to give it a star rating ★ below. You can also tag me on Instagram so I can see it!

More Mexican Recipes

If you're looking for other quick and easy Mexican-inspired dishes try these chorizo tacos, this sheet pan burrito bowl, or everyone's favorite one pot taco pasta.

a bowl of mexican pickled onions

Mexican Pickled Onions

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Course: Condiment
Cuisine: Mexican
Servings: 1 serving
Calories: 181kcal
Author: Molly Thompson
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Ingredients

  • 2 cups thinly sliced red onion about 1 large onion
  • 4 Tablespoons lime juice 2 lime
  • 2 tablespoons red wine vinegar
  • 2 teaspoons kosher salt
  • 2 teaspoons sugar

Recommended Equipment

  • Glass jar or bowl
  • Cutting board
  • Sharp chef's knife

Instructions

  • Slice the onion in half lengthwise from root to stem. Remove the outer layer or two of the onion then lay each half of the onion flat on the cutting board. Cut the root and stem off each side and thinly slice the onion into strips. Use your hands to separate the layers of strips.
  • Add the lime juice, red wine vinegar, salt, and sugar to a medium to large jar or bowl with a lid and stir it quickly to combine. Add the sliced onions and stir or close the lid and gently shake to combine. The pickling liquid will just cover the onions.
  • Close the lid and pickle the onion for at least 20 minutes. If you’re using these in a recipe like tacos, make the Mexican pickled onions first and let them marinate while you make the recipe and these onions will be ready. Store leftover onions in an airtight container in the fridge for up to 3 weeks.

Nutrition

Serving: 1serving | Calories: 181kcal | Carbohydrates: 43.5g | Protein: 3.8g | Fat: 0.4g | Sodium: 2496mg | Fiber: 5.7g | Sugar: 23g | Vitamin A: 1.2IU | Vitamin C: 42mg
Did you make this recipe?Mention @What_MollyMade or tag #whatmollymade!

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