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sliced red onions in mason jar

Fermented Red Onions

Sarah @ Sarah Put Simply
Enjoy this super easy recipe for fermented red onions. Eat them straight out of the jar or as a gut healthy garnish on any dish.
5 from 1 vote
Prep Time 20 minutes
Course Canning, Side Dish

Equipment

  • 1 quart mason jar wide mouth
  • Redmonds Real Salt
  • 4 Cup Liquid measuring cup
  • fermentation kit with weights and pipe lids
  • knife for slicing
  • measuring spoon teaspoon
  • cutting board
  • filtered water

Ingredients
  

  • 4 cups filtered water I use the water from my fridge- do NOT use chlorinated water
  • 2 tbsp salt Redmonds real salt
  • 2 large red onions

Instructions
 

  • Sterilize mason jar as well as weight and pipe lid, let completely cool.
  • Mix salt into water, then stir until salt is dissolved.
  • Thinly Slice onions. Pack onions firmly into jar, leaving 3/4 inch head space.
  • Pour room temperature saltwater brine over onions, ensuring they are fully submerged.
  • Place glass weight on top of the onions. If there is too much water for the weight to be even with the rim of the jar, simply pour out just enough water for weight to fit. Do not expose any of the sliced onions- they need to be fully submerged.
  • Top with the pipe lid and screw on a jar ring to keep it in place.
  • Set out of direct sunlight, in room temperature for 4-7 days until the fermentation is complete.
  • When fermention is complete, remove weight and pipe lid and cover with airtight lid. Store in fridge.
Keyword fermented onions, how to ferment onions
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