🧅 Quick Pickled Red Onions
Bright, tangy, slightly sweet, and wonderfully crisp, these quick pickled red onions are one of the easiest ways to add a punch of flavor to tacos, burgers, sandwiches, salads, bowls, and grilled meats. They take just minutes to prepare and become deliciously pink as they sit in the brine.
⏱ Recipe Information
Prep Time: 10 minutes
Pickling Time: 30 minutes minimum
Best Flavor: 2–24 hours
Total Time: About 40 minutes
Yield: About 1 large jar
Difficulty: Easy
🛒 Ingredients
🧅 Pickled Onions
- 2 small red onions, thinly sliced
- 2 cups (480 ml) white vinegar
- 2 cups (480 ml) water
- ⅓ cup (65–70 g) cane sugar
- 2 tablespoons sea salt
🌿 Optional Add-Ins
Choose any combination you like:
- 1 teaspoon black peppercorns
- 1 teaspoon mustard seeds
- 1–2 garlic cloves, thinly sliced
- ½ teaspoon red pepper flakes
- 1–2 bay leaves
- Fresh dill
- Fresh cilantro
- A few slices of jalapeño
- ½ teaspoon coriander seeds
Instructions
1. Slice the Onions
Peel the red onions and cut them in half from root to tip.
Slice them very thinly into half-moons.
The thinner the slices, the faster they pickle.
Transfer the sliced onions to a clean heatproof jar or container.
🥣 Make the Pickling Brine
2. Combine the Vinegar & Water
Pour the white vinegar and water into a saucepan.
Add the cane sugar and sea salt.
If using any spices such as peppercorns, mustard seeds, or red pepper flakes, add them now.
3. Heat the Brine
Place the saucepan over medium heat.
Warm, stirring occasionally, until the sugar and salt completely dissolve.
The mixture does not need to reach a rolling boil.
Once dissolved, remove from the heat.
🧅 Pickle the Onions
4. Pour the Brine Over the Onions
Carefully pour the warm pickling liquid over the sliced onions.
Make sure the onions are completely submerged.
If necessary, gently press them down with a clean spoon.
5. Cool
Leave the jar uncovered or loosely covered until it cools to room temperature.
The onions will begin turning a beautiful bright pink as they absorb the brine.
❄️ Refrigerate
6. Chill
Once cooled, seal the jar and refrigerate.
They can be enjoyed after approximately 30 minutes, but the flavor becomes much better after several hours.
For the best balance of tanginess, sweetness, and spice, let them sit overnight.
🌮 How to Use Pickled Red Onions
These onions are fantastic on:
- Tacos
- Burritos
- Quesadillas
- Burgers
- Hot dogs
- Pulled pork
- Grilled chicken
- Steak
- Sandwiches
- Avocado toast
- Salads
- Grain bowls
- Rice bowls
- Nachos
- Eggs
- Fish and seafood
They’re especially good with creamy or rich foods because their acidity cuts through the richness.
⭐ Chef’s Tips
Slice Them Thin
Thin slices pickle faster and become beautifully tender while retaining a little crunch.
Don’t Overcook the Onions
The hot brine is enough to soften them. There’s no need to boil the onions themselves.
Add Spices to Customize
Peppercorns and garlic give a savory version, while red pepper flakes add a pleasant kick.
For Less Sweetness
Reduce the sugar to ¼ cup if you prefer a sharper, more vinegar-forward pickle.
For Sweeter Onions
Increase the sugar to ½ cup for a sweeter, more rounded flavor.
Want Them Extra Pink?
Add a few thin slices of beet to the jar while pickling. Remove them before serving.
🌶️ Flavor Variations
Spicy Pickled Red Onions
Add sliced jalapeño and ½–1 teaspoon red pepper flakes.
Garlic Herb
Add 2 sliced garlic cloves, a bay leaf, and a few sprigs of fresh dill.
Mexican-Style
Add cumin seeds, coriander seeds, and sliced jalapeño.
Citrus Pickled Onions
Replace ¼ cup of the water with fresh lime juice for a brighter flavor.
Honey Pickled Onions
Replace some or all of the cane sugar with honey once the brine has been removed from the heat.
🧊 Storage
Keep the onions refrigerated and submerged in their brine.
For the best quality, use within 2–3 weeks.
Always use a clean utensil when removing onions from the jar.
Important: This is a refrigerator pickle, not a shelf-stable canning recipe. Keep it refrigerated.
🧅✨ Recipe Summary
These Quick Pickled Red Onions are an incredibly easy flavor booster made with just red onions, vinegar, water, cane sugar, and sea salt.
They’re crisp, tangy, slightly sweet, beautifully pink, and ready in about 30 minutes—although an overnight rest makes them even better.
Make a jar once, and you’ll find yourself putting them on everything! 🌮🧅💗