These quick pickled red onions are sharp, lightly sweet, and ready in minutes. I like keeping a jar in the fridge to add brightness to tacos, salads, sandwiches, and simple meals.
Thinly slice 2 red onions and place them in a clean jar.
Add 1 cup (240 ml) white vinegar and 1 cup (240 ml) water to the jar, making sure the onions are mostly covered.
Pour everything into a saucepan, then add 1 tablespoon sugar and 1 teaspoon salt.
Warm over medium heat for about 2 minutes, stirring until the sugar and salt are fully dissolved. Do not let it boil.
Carefully pour the warm onions and brine back into the jar, pressing the onions down so they are completely submerged.
Cover and let sit for at least 30 minutes before serving, or refrigerate for a stronger flavor.
Notes
Slice Thin for Even Pickling: I like slicing the onions thin so they soften quickly and absorb the brine evenly.Keep the Heat Gentle: I only warm the mixture enough to dissolve the sugar and salt so the onions stay crisp.Make Sure They’re Submerged: I always press the onions down so every slice sits under the liquid.