Quick Pickled Red Onions with Whole Spices Recipe

Prep: 15 minCook: 3 min12 servingsmediumAmerican
Quick Pickled Red Onions with Whole Spices Recipe

These tangy pickled red onions transform from sharp and pungent to mildly sweet and acidic in just 30 minutes. The simple brine of vinegar, sugar, and salt creates the perfect balance, while whole spices like star anise, coriander, and mustard seeds add aromatic complexity. Perfect as a condiment for tacos, sandwiches, salads, or grain bowls, these pickles brighten any dish with their vibrant color and zesty crunch. The quick pickling method means no canning required - just slice, pour, and wait.

Ingredients

12 servings
  • 1 red onion, halved and very thinly sliced
    white onion1:1vegetarianvegan

    milder flavor

    Full guide →
  • 1 ½ cups white vinegar
    apple cider vinegar1:1vegetarianvegan

    fruitier tang

    Full guide →
  • ½ cup water
  • 2 tablespoons sugar
    honey1:1vegetarian

    deeper sweetness

    Full guide →
  • 2 teaspoons salt
  • ¼ teaspoon whole black peppercorns(optional)
  • teaspoon coriander seeds(optional)
  • teaspoon brown mustard seeds(optional)
  • 1 whole star anise(optional)
  • 1 dried birds eye chile(optional)
    serrano pepper1/4 slicedvegetarianvegan

    fresh heat

Instructions

  1. 1

    Place sliced red onion into a large bowl

  2. 2

    Combine vinegar, water, sugar, and salt in a small pot

  3. 3

    Heat mixture over medium heat and simmer until sugar and salt dissolve

  4. 4

    Pour hot vinegar mixture over sliced onion

  5. 5

    Stir gently and let sit for at least 30 minutes

  6. 6

    Transfer to airtight container if storing

Tips

Tip 1

Add spices to the onions before pouring the hot brine for maximum flavor infusion

Tip 2

Use a mandoline or very sharp knife for paper-thin onion slices that pickle more quickly

Tip 3

Let cool completely before refrigerating to prevent condensation in the jar

Good to Know

Storage

Refrigerate in airtight container up to 2 months

Make Ahead

Can be made immediately before serving or up to 2 months ahead

Serve With

Serve at room temperature as condiment for tacos, sandwiches, salads

Common Mistakes

Watch

Slice onions too thick to avoid slow pickling

Watch

Let mixture cool before transferring to avoid jar cracking

Substitutions

Vegan Options

red onion
white onion1:1vegetarianvegan

milder flavor

Full guide →
white vinegar
apple cider vinegar1:1vegetarianvegan

fruitier tang

Full guide →
birds eye chile
serrano pepper1/4 slicedvegetarianvegan

fresh heat

General Alternatives

sugar
honey1:1vegetarian

deeper sweetness

Full guide →
Find more substitutions →

FAQ

Can I use different types of onions?

Yes, white or yellow onions work but red onions provide the best color and mild flavor for quick pickling.

How long do these keep in the refrigerator?

Properly stored in an airtight container, pickled onions last up to 2 months in the refrigerator.

Can I skip the spices?

Absolutely, the basic brine of vinegar, water, sugar and salt creates delicious pickles on its own.