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pickled onions taken out of the jar

Pickled Onions

This pickled red onion recipe is so easy that you can make it in just 10 minutes! It will definitely add that kick, crunch and tangy complement of condiment to your favorites such as sandwiches, burgers and tacos.
Course Side, Side Dish
Cuisine American
Prep Time 2 minutes
Cook Time 8 minutes
Total Time 10 minutes
Servings 4
Calories 0.4kcal
Author Imma


  • Pot
  • Glass Jar


  • 2 cups or 200 g red onion peeled, and thinly sliced
  • 1 cup or 8fl oz water
  • ½- 1 cup 4-8 fl oz white vinegar
  • 2-3 tbsp or 25.20-37.80 g granulated sugar
  • 3 cloves garlic smashed
  • 2 tsp or 34.14 g salt
  • 2 tsp or 4.66 g black peppercorns cracked
  • ½ tsp or 1.65 g pepper flakes
  • 1 tsp or 3 g mustard seed
  • 1 sprig thyme optional


  • Peel and thinly slice onions to make onion rings then set aside.
  • Add all the ingredients together (except the onions) in a pot and bring the mixture to a simmer for 8 minutes. Then quickly blanch the onion rings in the hot vinegar mixture.
  • Then transfer the onions in a glass jar. Pour the simmered vinegar mixture over the onions once it’s cooled down.
  • Put the lid on and store it in the refrigerator. I recommend eating pickled onions after a day of preservation.


Serving: 1g | Calories: 0.4kcal | Carbohydrates: 0.1g | Sodium: 14mg | Potassium: 1.4mg