These pickled red onions are crunchy, crisp, and perfectly tangy. Learn how to make quick pickled red onions in just 30 minutes using just 5 easy ingredients. The best condiment for burgers, steaks, salads, toasts, or poke bowls!
Place a medium saucepan over medium heat and add the white vinegar, water, peppercorns, garlic, salt, and sweetener. Bring to a boil and stir until the sugar and salt dissolve.
Cut the red onion in half, then slice into super thin strips. Place the onions in a mason jar. Pour the hot vinegar mixture over the onions and screw the lid. Shake the jar to ensure the onions are covered in the vinegar mixture.
Let the onions marinate for at least 30 minutes. Serve immediately or refrigerate for up to 2 weeks.