You might have heard that you should never put a cut onion in the fridge. That’s mostly for whole onions, which like cool, dark, and dry places. Cut onions are a different story.
Once you cut it, the onion’s clock starts ticking, and the fridge is your best bet to slow it down. Room temperature is a party for bacteria. The fridge is the security guard who sends everyone home early.
So please, refrigerate your leftover half. Don’t let it sit on the counter, thinking it’s going to be fine. It won’t be fine.
Smart Ways To Keep Cut Onions Fresh Without Refrigeration | CyCookery
A Small Side Story
Last week, I made tacos and used half a red onion. I wrapped it tight, popped it in a jar, and forgot about it. Five days later, I pulled it out for a salad.
It was still crisp, firm, and beautiful. No slime, no weird smell. I actually let out a little “yes!” in my kitchen. My husband thought I was cheering for the microwave.
That’s the kind of simple win we all need in our lives, right?