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Vibrant sliced pickled red onions in a clear glass jar.

Best way to grow your own Pickled Red Onions in just 5 days

Learn how to quickly pickle red onions at home with this simple recipe. These tangy onions are perfect for adding a burst of flavor to various dishes.
Prep Time 10 minutes
Total Time 2 hours
Servings 8 servings
Calories 15 kcal

Equipment

  • Mandoline or sharp knife
  • Glass jar (pint-sized)

Ingredients
  

Main Ingredients

  • 1 large red onion thinly sliced
  • 1 cup water
  • 1 cup apple cider vinegar
  • 1 tablespoon granulated sugar or to taste
  • 1 teaspoon salt or to taste
  • 1 teaspoon peppercorns optional

Instructions
 

Preparation

  • Thinly slice the red onion using a mandoline or sharp knife and place the slices into a clean jar.
  • In a saucepan, combine water, apple cider vinegar, sugar, and salt; bring to a boil, stirring until sugar and salt dissolve.
  • Pour the hot liquid over the onions in the jar, ensuring they are fully submerged.
  • Allow the jar to cool to room temperature before sealing it and refrigerating.
  • The pickled red onions will be ready to eat in about an hour, and they can be stored in the refrigerator for up to 2-3 weeks.

Notes

For extra flavor, add a pinch of red pepper flakes or fresh herbs to the jar before pouring in the brine.