Moisture is the enemy. No, really, it’s worse than that friend who “borrows” your Tupperware forever. Wet onions rot fast. Like, fast fast.
Before you store anything, pat that cut side dry with a paper towel. Don’t be shy. Blot it like you’re dabbing a sweaty forehead after Zumba. Dry = happy onion.
And never store a cut onion in a sealed plastic bag with no air. That’s a recipe for Slime City, population: your taste buds.
Option 1: The Fridge Method (For a Few Days)
You’re planning to use that onion in the next day or two? Great. You’re a planner. I admire you.
Wrap the cut half tightly in plastic wrap. Press it directly against the cut surface. No air gaps, no onion breath escaping. Then, pop it in a reusable silicone bag or a glass container with a lid.
Pro tip: Label it with a piece of masking tape. Write “ONION – USE ASAP” in sharpie. You’ll thank yourself when you’re digging through leftovers at 11 PM.
Onions Storage at Anthony Browne blog
Option 2: The Freezer Hack (For the Lazy Genius)
Okay, full confession time. I am a notorious onion-over-chopper. I always have extra. So I freeze it. Gasp! Yes, frozen onions are a thing.
First, dice your leftover onion into small pieces. Spread them on a parchment-lined baking sheet in a single layer. Pop that sheet in the freezer for an hour. That’s called flash freezing. Fancy, right?
Once they’re solid, dump the frozen bits into a ziplock bag. Press out the air. Label it. Boom—you now have ready-to-go diced onion for soups, stews, or omelets. No tears, no drama.
Option 3: The Pickle Power Move
This one is for the overachievers and the people who love tangy things. You know who you are. You put pickles on everything.
Slice your leftover onion thinly. Throw it in a jar with a mix of equal parts vinegar and water. Add a pinch of salt, a pinch of sugar, and maybe a clove of garlic. Shake it like a polaroid picture.
Refrigerate it overnight. By morning, you’ve got quick-pickled onions that belong on tacos, salads, or just eaten straight from the jar. Don’t judge. I’ve done it. It’s a vibe.
How to Store Onions in Fridge? - My Heart Lives Here
