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+ servings
Pickled red onions in a jar on a counter top.
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5 from 4 votes

Easy Pickled Red Onions

Pickled red onions take minutes to throw together and add a briny-sweet-spicy crunch that kicks up the flavor and texture in all kinds of dishes, like tacos, salads, wraps, and more.
Prep Time10 minutes
Cook Time2 hours
Total Time2 hours 10 minutes
Course: Condiment
Cuisine: American
Keyword: pickled red onions
Servings: 12 servings
Calories: 11kcal

Equipment

Ingredients

  • 1 large red onion
  • 1/2 cup water
  • 1/4 cup apple cider vinegar
  • 1/4 cup white vinegar
  • 1 1/2 tablespoons sugar
  • 1 teaspoon salt
  • Optional: small pinch of red pepper flakes

Instructions

  • On a cutting board, trim off both ends of the onion and discard the outer skin. Cut in half from top to bottom. Lay both halves flat side down and then slice very thinly vertically (from top to bottom). (Alternatively, you can use a mandolin to slice the onions.)
  • Pack the onions down into a 16-ounce jar.
  • In a small pot, add the water, both vinegars, sugar, salt, and (optional) red pepper flakes. Bring to a boil and then remove from the heat.
  • Pour this brining mixture over the onions, screw on the lid, and place in the refrigerator for at least 2 hours. These taste best if eaten within about 3 days, but can remain in the fridge for 2-3 weeks.

Notes

Pickled red onions taste best if eaten within about 3 days, but can remain in the fridge for 2-3 weeks.

Nutrition

Calories: 11kcal | Carbohydrates: 2g | Protein: 0.1g | Fat: 0.01g | Sodium: 195mg | Fiber: 0.2g | Sugar: 2g