Mushroom Free Classic Pickled Red Onions
Tangy, jewel-bright, and impossibly easy to make, these pickled red onions are the kind of condiment that quietly transforms everything they touch. A sharp apple cider vinegar brine balanced with just a touch of sugar and salt turns raw onion slices into something mellow, vibrant, and deeply craveable. The optional red pepper flakes add a gentle kick if you want a little heat, but the base recipe is already packed with personality on its own. For anyone navigating a mushroom-free lifestyle, this is a completely clean and worry-free recipe — every single ingredient is straightforward and easy to verify, with zero hidden fungi lurking in sauces, seasonings, or store-bought shortcuts. The whole process takes less than an hour from start to finish, and once that brine hits the onions, they bloom into a gorgeous deep pink that looks stunning on tacos, grain bowls, sandwiches, eggs, or cheese boards. Keep a jar in the fridge and you'll find yourself reaching for it constantly — it's one of those small-effort, high-reward kitchen staples that earns its place every single week.
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Learn more →Ingredients
8 servings
- 1 large red onion, very thinly sliced into rings or half-moons
- ¾ cup apple cider vinegar
- ¼ cup water
- 1 tbsp granulated sugar
- 1 tsp kosher salt
- ½ tsp black peppercorns
- ¼ tsp red pepper flakes (optional)
Instructions
- 1
Pack the sliced red onion into a clean 16 oz mason jar, pressing gently so the slices fit snugly without crushing them.
- 2
Combine the apple cider vinegar, water, sugar, and kosher salt in a small saucepan over medium heat, stirring until the sugar and salt are fully dissolved, about 2–3 minutes. Remove from heat.
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