Yes, Buzzfeed is a waste of time. I'm aware of that. But once in awhile, you'll find a gem like this one. Why the hell didn't someone teach me this stuff years ago? They should plaster it on a big billboard or something above the produce aisle at the grocery store. I think I learned about the existence of shallots, like, three years ago, which is all kinds of pathetic.
If you have more onion related questions, you should probably go on over here.