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Pickled Red Onions Recipe

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4.3 from 9 reviews

These quick and easy Pickled Red Onions are tangy, slightly sweet, and perfect for adding a zesty crunch to tacos, salads, sandwiches, and more. Ready in just 45 minutes and great for storing in the fridge to enjoy any time.

Ingredients

Pickling Brine

  • 3 Tbsp white sugar
  • 1.5 Tbsp salt
  • 1 cup white vinegar
  • 1/2 tsp peppercorns

Main Ingredients

  • 1.5 cups sliced red onion
  • 1 clove garlic

Instructions

  1. Prepare Onions and Garlic: Thinly slice the red onion into 1/8-inch slices and peel the garlic clove. Place both into a large glass or ceramic bowl.
  2. Make the Brine: In a small saucepan, combine sugar, salt, and peppercorns. Add the white vinegar and stir until the sugar and salt are fully dissolved. Cover with a lid and bring the mixture to a boil over medium-high heat.
  3. Combine and Submerge: Once boiling, pour the vinegar mixture over the sliced onions and garlic. Press the onions down so all pieces are submerged under the brine. To ensure full submersion, optionally place a piece of plastic wrap over the onions pressing them gently below the liquid surface.
  4. Cool and Store: Allow the mixture to cool to room temperature. You can use the pickled onions immediately or transfer them along with the brine into a covered, non-reactive container (glass, ceramic, or plastic) and refrigerate. The pickled onions keep well in the refrigerator for 3-4 weeks.

Notes

  • Make sure to use a non-reactive container such as glass or ceramic for storage to avoid any metallic taste or reaction.
  • Submerging onions completely in the brine ensures even pickling and prevents spoilage.
  • You can adjust the sugar and salt to taste depending on your preferred level of sweetness or saltiness.
  • These pickled onions are great to prepare in advance as the flavors improve after a few hours in the fridge.
  • If you want to speed up pickling, you can let them sit at room temperature for an hour before refrigerating.