10-minutes is all you need to make a batch of flavorful pickled red onions. Keep a jar on-hand to add punch and flavor to your favorite Mexican recipes, taco recipes, eggs and more.
Slice the onion as thin and evenly as possible. I recommend a mandoline to ensure consistency.
Add as many red onion slices into a jar as possible. I recommend a sealable glass mason jar (16 oz).
Add the vinegar, sugar, salt and warm water to a medium size bowl and stir until the sugar and salt are dissolved.
Pour the vinegar mixture over the sliced onions, ensuring the liquid completely covers the onions. Marinate for at least an hour before enjoying to maximize flavor.
Store in an airtight container for up to three weeks.
Video
Notes
Note 1: If you own a mandoline, now is the time to break it out. You want the slices thin and as even as possible.Note 2: You could use Distilled White Vinegar or White Wine Vinegar in place of the Apple Cider vinegar for a stronger, more pronounced flavor.Note 3: The water doesn't need to be heated, but it needs to be hot from the tap. This ensures it's hot enough to dissolve the sugar and salt.