These quick Pickled Red Onions are tangy, sweet, and crisp, ready to brighten up tacos, salads, sandwiches, and bowls with just five minutes of hands-on time.
In a small saucepan, combine the water, white vinegar, and sugar. Heat over medium heat, whisking, until the sugar fully dissolves. Remove from the heat.
Cut off both ends of the red onion and discard, halve it through the core, and slice into 1/8 inch strips. Peel and smash the garlic cloves with the back of a knife.
Add the sliced onion and smashed garlic to the warm vinegar mixture, pressing to submerge. Let it sit at room temperature until fully cooled.
Transfer to an airtight jar and refrigerate. They are good after about an hour but best after sitting overnight. Use within 1 to 2 weeks.
Notes
Store in an airtight container in the fridge for up to 2 weeks. The garlic may turn a harmless bluish color as it sits; you can leave it in or remove it.