Do I have to boil the brine?

Boiling helps dissolve the solids and starts the softening process, but a "cold pickling" method also works if you have more time to wait for the results.

Can I reuse the brine for a second batch of onions?

It is not recommended for safety and flavor reasons. The first batch of onions releases water, which dilutes the acidity of the brine for the next round.

Why did my onions turn blue or gray?

This usually happens due to minerals in the water or the type of salt used. Always use filtered water and non-iodized sea salt to prevent discoloration.

Can I make these without sugar?

Yes, you can omit the sugar or use a natural substitute like stevia, though the onions will be significantly sharper and more acidic.

How long do I need to wait before eating them?

While they look ready in 30 minutes, the flavor is best after at least 2 to 4 hours of chilling in the refrigerator.

Easy Pickled Onion Recipe: The Ultimate Guide To Quick

Ingredients

Scale

1 large red onion, thinly sliced
1/2 cup apple cider vinegar
1/2 cup warm water
1 tablespoon granulated sugar
1.5 teaspoons fine sea salt
1/2 teaspoon black peppercorns
1 clove garlic, peeled

Instructions

Step 1: Prep Onions – Thinly slice the red onion into uniform slivers using a sharp knife or mandoline.
Step 2: Mix Brine – In a small bowl, whisk together the warm water, vinegar, sugar, and salt.
Step 3: Dissolve Granules – Stir vigorously until the sugar and salt have completely dissolved into the liquid.
Step 4: Pack Jar – Place the sliced onions and optional aromatics into a clean pint-sized mason jar.
Step 5: Add Liquid – Pour the brine over the onions until they are completely submerged in the jar.
Step 6: Quick Cure – Allow the onions to sit at room temperature for 30 to 60 minutes to develop flavor.
Step 7: Refrigerate – Secure the lid and store in the refrigerator to maintain optimal crunch and acidity.

Notes

For a spicier kick, add a pinch of red pepper flakes to the brine before pouring.

Author: Mike
Prep Time: 10 minutes
Cook Time: 5 minutes
Category: Condiment
Method: Quick Pickling
Cuisine: Universal
Diet: Vegan

Nutrition

Serving Size: 2 tablespoons
Calories: 15 kcal
Sugar: 2 g
Sodium: 150 mg
Fat: 0.1 g
Saturated Fat: 0.01 g
Unsaturated Fat: 0.02 g
Trans Fat: 0.01 g
Carbohydrates: 3.5 g
Fiber: 0.4 g
Protein: 0.2 g
Cholesterol: 0.1 mg

Keywords: pickled onions, red onions, condiment, quick pickle, chef recipe