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A close up of a large jar full of red onions with some onions by the jar.
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4.67 from 3 votes

How to Make Pickled Red Onions

Pickled Red Onions are a beautifully bright and nutritious way to add some tanginess to any food. Learn How to Make Pickled Red Onions easily and with only a handful of ingredients.
Prep Time5 minutes
Cook Time2 minutes
Setting Time1 hour
Total Time1 hour 7 minutes
Course: Sauces and Condiments
Cuisine: American
Servings: 8
Calories: 14kcal

Ingredients

  • 1 large red onion
  • 1/2 cup distilled white vinegar
  • 1/2 cup water
  • 1 tablespoon sugar
  • 1 1/2 teaspoons salt

Instructions

  • Peel off the dry skin of the red onion. Using a very sharp knife or mandolin, cut into 1/8th inch slices.
  • Put the sliced onions in the jar.
  • In a small pot heat the water, vinegar, salt, and sugar for 2 minutes at a simmer until the salt and sugar are dissolved.
  • Pour the liquid into the jar of onions.
  • Let the jar come to room temperature for about 30 minutes then put in the refrigerator.
  • Refrigerate for at least 30 minutes before enjoying

Notes

  • Put the jar of onions in the sink while pouring in the hot liquid.
  • Use a fork to shove as many onion slices as you can into the jar and also remove any air bubbles after you pour in the vinegar mixture.
  • Make these without sugar to make these pickled red onions sugar free. Add in 1-2 tablespoons of lemon juice to combat the vinegar.
  • Pickled onions will last 2-3 weeks in the fridge.
 
 
* Please note that all nutrition information are just estimates. Values will vary among brands, so we encourage you to calculate these on your own for most accurate results.

Nutrition

Calories: 14kcal | Carbohydrates: 3g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 437mg | Potassium: 21mg | Fiber: 1g | Sugar: 2g | Vitamin A: 1IU | Vitamin C: 1mg | Calcium: 4mg | Iron: 1mg