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Low Carb Pickled Onions

Low carb pickled onions are a perfect condiment for Mexican food, especially carnitas or cochinita pibil.
Course condiment
Cuisine Mexican
Keyword low carb - keto, low carb snacks, low carb vegetables
Prep Time 10 minutes
Cook Time 1 hour
Servings 10
Calories 36kcal
Author dorothy stainbrook



  • 3 whole medium-large red onions
  • 1.5 tsp whole black peppercorns
  • 1.5 cups apple cider vinegar
  • 3 tbsp sugar
  • 3 tsp table salt
  • water enough to fill jar


  • Peel the onions and cut them in half. Using a sharp knife or a mandolin, thinly slice the onions and place in a large glass jar with an airtight lid
  • Add the peppercorns to the jar and lightly shake the jar to disperse the peppercorns
  • In a small bowl, place the sugar, salt and apple cider vinegar. Whisk until sugar and salt is completely dissolved. Pour into the jar with the onions
  • Fill the jar with water until the water level reaches the top of the onions
  • Let sit in room temperature for an hour and place the extra in the refrigerator for later.


Calories: 36kcal | Carbohydrates: 7g | Protein: 1g | Fat: 1g | Sugar: 5g