Simple Spanish Pickled Onions Recipe

There’s something magical about the way Spanish pickled onions can instantly transform a simple meal, adding crunch, brightness, and just the right tang to elevate everyday flavors.

In Spanish cuisine, pickled white onions bring that perfect balance of sharpness and sweetness, making them a must-have in Spanish recipes for everything from tapas to sandwiches and grilled dishes.

Here, we will uncover the story behind this amazing food item, show you how to make Spanish pickled onions, and share insider tips to tailor it perfectly to your taste.

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Pssst…!!?? You can’t get enough of Spanish recipes? Have a look at my other posts: 

• Spanish pickles recipe

• Spanish pickled garlic

• Spanish pickled carrots

Background of the Dish

This recipe traces back to traditional Spanish home kitchens, where onions and other vegetables were preserved with vinegar, herbs, and spices to extend their shelf life and add flavor. 

White onions, with their crisp texture and mild sweetness, became a perfect base for tangy, aromatic pickling blends.

Over time, regional variations introduced ingredients like garlic, bay leaves, and smoked paprika.

Today, pickled white onions are a beloved pantry staple, adding bright acidity and zest to countless Spanish dishes.

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Things You’ll Need for Spanish Pickled Onions

To prepare the quick pickled Spanish onions, you will need white vinegar, white onions, paprika, sugar, salt, bay leaf, black peppercorns, garlic, and water as the main ingredients.

Ingredients

• 2 white onions
• 2 garlic cloves
• 1 (240ml) white vinegar (apple cider or rice vinegar as well)
• 1/2 cup (120ml) water
• 1 bay leaf
• 1/2 teaspoon paprika
• 5 whole black peppercorns
• 2 tablespoons sugar
• 3 tablespoons salt

How to Make Spanish Pickled Onions – Step by Step Guide

1. For the first step in this Spanish pickled onions recipe, peel and thinly slice the onions into rings or half-moons. Also, peel the garlic cloves and slice them.

2. Now, grab a small saucepan, and combine the vinegar, sugar, paprika, salt, and garlic. Bring it to a simmer over medium heat.

3. After that, heat gently and stir until the sugar and paprika dissolve (you don’t need to boil it).

4. To continue with the pickled Spanish onions recipe, add 1/2 cup water to the brine. Also, incorporate the peppercorns and bay leaf.

5. Then, place sliced onions in a clean jar or bowl and pour the hot brine over them. Make sure they’re fully submerged.

6. Lastly, cool the Spanish pickled onions to room temperature, then cover and refrigerate. You can serve them in about 30–60 minutes, but it’s best after a few hours.

Substitution of Ingredients

The standout characteristic of Hispanic pickled onions is the herbs and spices that you include, and in this recipe, you can play a lot with that.

Since the white vinegar provides a rather neutral base, you can go wild while seasoning the Spanish pickled onions, incorporating chili flakes, cumin, turmeric, or fresh herbs like thyme, parsley, and rosemary.

If white onions aren’t your favorite version of this versatile vegetable, then you should check out our Spanish pickled red onions recipe for a great alternative.

Apart from that, you can also prepare the pickled Spanish onions with Sherry vinegar if you don’t have white vinegar, but avoid using balsamic or red wine vinegar, as their flavor and color are too overpowering.

Tips on Serving Spanish Pickled Onions

Spanish pickled onions are a food that will save you from any trouble, and they can also become key elements of your favorite dishes.

The easiest way is to get the pickles on top of slices of your favorite bread, toast, or crackers, and enjoy them with a nice refreshing drink.

You can also use pickled onions as toppings for sandwiches, salads, or go beyond the Spanish menu and explore other dishes like tacos or hot dogs.

As a key tip: make sure that whenever you remove the pickled onions from the jar, you do so with clean utensils, otherwise the brine will become contaminated and the food will be compromised.

How to Store Spanish Pickled Onions

To store Spanish pickled white onions, place them in a clean, lidded glass jar (or any other airtight container), and ensure the onion slices remain fully submerged in the brine.

If the liquid level drops over time, you can top it up with equal parts vinegar and water, one tablespoon at a time.

Properly stored, the pickled onions will last up to 2 months in the refrigerator, or about 2 weeks at room temperature, as long as it doesn’t get too warm in your kitchen.

Don’t forget: always use clean utensils when taking onions out of the jar, as it is the only way to avoid cross-contamination and it keeps your pickles fresh and safe to eat for longer.

Are you a pickle fanatic? Then you should try other Andalusian recipes that you’ll love, such as Spanish pickled vegetables and Spanish pickled peppers.

Recipe Card: Spanish Pickled Onions

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