5 from 5 votes
garden table scene with burger in brioche bun, mashed avocado and pickled red onions and various ingredients in background
Pickled Red Onions
Prep Time
5 mins
Minimum pickling time
20 mins
Total Time
5 mins
Course: Side Dish
Keyword: pickles, pickled onions, pickled red onions, salad, side dish, red onions,
Servings: 6 people
Calories: 21 kcal
  • 2 medium red onions, thinly sliced
  • 120 ml white or red wine vinegar
  • 1 tsp salt
  • 1 tsp sugar
  1. Pile the thinly sliced onions into a non metallic bowl or large glass jar.

  2. Pour over the vinegar and add the salt & sugar. If you wish to include any of the optional extras below, add them at this point also.

  3. Mix well, cover and refrigerate. They are ready to eat after 20 minutes, although in my opinion taste their best after 8+ hours in the brine.

Recipe Notes
Whilst the basic recipe is fantastic, if you make this as much as we do, you make like to shake it up once in a while too! The following are optional extras that you may like to pimp the basic recipe with.
Spicy Pickled Red Onions
  1. Add 1/2 to 1 chilli in the initial stages. 

    You can either slice the chilli to incorporate it throughout the pickle, or keep the chilli whole, and just cut one slice through its length to allow the juice to seep out with out having the extra heat from the flesh and seeds when you come to serve.

Mexican Style Pickled Red Onions
  1. Add 1/2 red chilli, 1 minced clove of garlic and 1 tsp oregano to the mix.
Sugar Free Pickled Red Onions
  1. Simply omit the sugar from the above recipe. 

    I find that if you make them sugar free, you want to let them marinade for at least 8 hours as otherwise they can be a bit too punchy!

Nutrition Facts
Pickled Red Onions
Amount Per Serving
Calories 21
% Daily Value*
Fat 0g0%
Saturated Fat 0g0%
Cholesterol 0mg0%
Sodium 390mg17%
Potassium 61mg2%
Carbohydrates 4g1%
Fiber 0g0%
Sugar 2g2%
Protein 0g0%
Vitamin C 2.7mg3%
Calcium 8mg1%
Iron 0.2mg1%
* Percent Daily Values are based on a 2000 calorie diet.