Pickled Red Onions are crisp, tangy, and incredibly easy to prepare. They come together in minutes and develop their full flavor after a short rest, making them an ideal make-ahead condiment. Their vivid pink color brightens plates and their bright, slightly sweet acidity lifts sandwiches, tacos, salads, and more.
Pickled Red Onion
Quick pickled red onions add a punch of flavor to many dishes. With just a few ingredients—red onion, vinegar, salt, and sugar—you can transform ordinary meals into something vibrant and balanced. They’re especially useful in warm-weather cooking, where a tangy, crunchy contrast complements rich, smoky, or creamy foods.
These pickled onions are terrific as a topping for pulled pork, burgers, tacos, roasted vegetables, grilled fish, and grain bowls. Keep a jar in the fridge so you always have a bright, acidic counterpoint to balance richer flavors. They also make a striking garnish for salads, sandwiches, and even simple cheese plates.
How to make pickled red onions at home
These are as simple as slicing the red onion and combining the ingredients in a jar. The basic method is straightforward: slice the onion, add vinegar, salt, and sugar, shake or stir until dissolved, then let the mixture rest so flavors meld. You can eat them after a couple of hours, but they taste best after several hours or overnight.
Tips for a smooth process: use a sharp knife or a mandoline to slice evenly, and use a clean jar with a tight lid for storage. If you prefer a softer texture, leave the jar at room temperature for a couple of hours before refrigerating. For a crisper bite, refrigerate right away.
Tips for making delicious pickled onions
- Slice thickness: Thin slices are great for sandwiches and quick pickling, while thicker slices hold up better on salads and tacos.
- Vinegar choice: Apple cider vinegar pairs wonderfully with red onions, lending a mellow sweetness that complements the onion’s natural flavor. White vinegar works in a pinch, but the profile will be sharper.
- Use red onions: Red onions are milder and slightly sweet compared with white or yellow varieties, and they develop an attractive pink hue when pickled.
- Seasoning variations: If desired, add a bay leaf, peppercorns, or a pinch of crushed red pepper for nuance—but the classic recipe is excellent on its own.
How to choose the best red onion for this recipe
Selecting a good red onion makes a difference. Look for onions that are firm with dry, papery skin. Avoid any with soft spots, brown patches, or sprouts. A fresh, firm onion will give the best texture and flavor when pickled.
- Firmness: The onion should be solid and heavy for its size.
- Skin: Dry, intact outer skin without damp or moldy patches.
- Color: Deep red or purple coloring is ideal; avoid brown or discolored spots.
How to store onions so they last the longest
Pickled red onions store well in the refrigerator for several weeks, and the pickling process helps prevent the onion aroma from spreading through other foods. If you have extra fresh onions you’re not pickling immediately, store them properly:
- Whole onions: Store in a cool, dry, well-ventilated place and check periodically for soft spots.
- Sliced onions: Wrap tightly or store in an airtight container in the fridge for up to a week.
- Freezing option: Chop and freeze in labeled bags for long-term storage; frozen onions are best used in cooked dishes.
Because pickling preserves the onions, it’s an excellent way to make a flavorful condiment that’s ready to use for weeks.
Spice up a dish with pickled red onions
Pickled red onions are versatile and elevate many dishes. Use them to add acidity and crunch to sandwiches, tacos, grilled meats, roasted vegetables, bowls, and salads. They pair especially well with smoky, fatty, or creamy foods—pulled pork, burgers, fish tacos, and creamy salads all benefit from a bright spoonful of pickled onions.
Try adding them to a simple turkey sandwich, using them as a topping for blackened or grilled fish, or stirring a few into a pasta or broccoli salad just before serving to add color and bite.
Yield: 6 servings
Pickled Red Onions
Simple, tangy, and versatile—keep a jar in the fridge to brighten your meals.
Prep Time: 5 minutes
Cook Time: 5 minutes
Rest Time: 12 hours
Total Time: 12 hours 10 minutes
Ingredients
- 1 large red onion, sliced into rings
- ¾ cup apple cider vinegar
- 1 tablespoon kosher salt
- 2 tablespoons sugar
Instructions
- Combine the sliced onion, apple cider vinegar, kosher salt, and sugar in a large mason jar or other sealable container. Stir or shake until the salt and sugar begin to dissolve.
- Let sit at room temperature for about 2 hours, shaking periodically to help the salt and sugar dissolve and the vinegar penetrate the onions.
- Place the jar in the refrigerator and leave overnight for best flavor and color.
- Drain before serving if you prefer a less-vinegary bite, or serve with some of the pickling liquid for extra tang.
Nutrition Information (per serving)
Calories: 32 • Total Fat: 0g • Carbohydrates: 7g • Sugar: 5g • Protein: 0g