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Pickled red onions are a simple easy refrigerator pickle project to add to your repertoire ~ they're not only beautiful, they're a workhorse when it comes to jazzing up lots of different kinds of foods!

Total time

0 minutes


  • 2 medium red onions
  • 1 cup white vinegar
  • ½ cup water
  • 1 tbsp multicolor peppercorns
  • ½ tsp yellow mustard seeds
  • ½ tsp cumin seed
  • pinch of sea salt
  • 2 tbsp sugar
  • i jalapeno or Serrano pepper, sliced, seeds and all


  1. Peel and thinly slice the onions. I used my mandoline slicer for this as it does a nice, even job.
  2. Put the vinegar, water, and all the spices in a small pan and bring up to a simmer. Take off the heat, and add the onions and hot pepper. Mix well.
  3. Place the onions in a mason jar and pour the liquid over them. Make sure the liquid covers the onions. Let cool, then cover and refrigerate.
  4. Will keep in the refrigerator for a month.

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