Quick Pickled Red Onions
Prep Time: 10 minutes | Cook Time: 5 minutes | Steep Time: 30 minutes | Total Time: 45 minutes
Difficulty / Intensity: Very Easy (Beginner-friendly)
Yield: 1 Pint Jar (Approx. 8 servings)
Recipe Overview
| Metric | Detail |
| Primary Method | Stovetop quick brine ( refrigerator pickling ) |
| Intensity Level | Low heat stove work; precision slicing required |
| Flavor Profile | Tangy, bright, subtle sweetness, with a gentle bite |
Ingredients
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1 medium red onion (sliced thinly into uniform half-moons)
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½ cup apple cider vinegar (or white vinegar, red wine vinegar)
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½ cup water
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1 tablespoon granulated sugar (or honey/maple syrup)
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1½ teaspoons fine sea salt or kosher salt
Optional Flavor Boosters
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1 clove garlic, gently smashed
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½ teaspoon whole black peppercorns
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1 small pinch red pepper flakes (for a kick of heat)
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1 bay leaf or 1 sprig fresh thyme
Step-by-Step Instructions
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Prep the Onion: Slicing uniformly ensures even pickling. Cut the red onion in half from stem to root, peel away the outer skin, and slice thinly into half-moons (about ⅛-inch thick). Place the sliced onions directly into a clean 16-ounce (pint-sized) glass mason jar along with any optional spices (garlic, peppercorns, red pepper flakes, bay leaf).
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Make the Brine: In a small saucepan set over medium heat, combine the water, apple cider vinegar, sugar, and salt. Cook for 2 to 3 minutes, stirring occasionally, until the sugar and salt have completely dissolved. Bring the liquid to a light simmer—no need to boil vigorously.
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Pour & Submerge: Carefully pour the hot brine into the jar over the sliced red onions. Use a clean spoon to gently press the onions down, making sure they are entirely submerged under the liquid.
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Steep at Room Temperature: Allow the jar to sit uncovered at room temperature for at least 30 minutes. As the onions steep in the hot brine, they will soften slightly and turn a brilliant pink color.
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Seal & Store: Seal the jar with a tight-fitting lid. Serve immediately or transfer to the refrigerator for cooler, crunchier onions.
Storage & Shelf Life
Unlike traditional canned pickles, quick pickles (refrigerator pickles) are not heat-processed for long shelf storage.
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Refrigeration: Store tightly covered in the refrigerator.
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Shelf Life: Best quality when consumed within 2 to 3 weeks.
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Texture Evolution: They achieve optimal flavor and texture after 24 hours. The onions will stay crisp for the first 7 days and gradually become softer over time while remaining safe to consume.
Estimated Nutrition (Per Serving)
Serving Size: ~2 tablespoons (approx. 25g)
| Nutrient | Amount per Serving |
| Calories | 15 kcal |
| Total Fat | 0 g |
| Sodium | 220 mg |
| Total Carbohydrates | 3.5 g |
| Dietary Fiber | 0.5 g |
| Sugars | 2.5 g |
| Protein | 0.2 g |