Here's the simple truth: chopped onions last about 7 to 10 days in the fridge when stored properly. Think of them like a ticket to a concert—they're amazing at first, but after a week, the show's kind of over. After that, they start losing their crunch and developing a flavor that's more "garage" than "gourmet."
But why only a week? Because chopping is like giving the onion a thousand tiny paper cuts. Each cut exposes its cells to air, kicking off a slow breakdown. It's a fascinating little chemistry experiment happening right in your Tupperware.
