You have described my dilema perfectly. My hand is almost twice the size of my wifes. She could barely cover a pickling onion with her tiny paw. The large onion you describe, we would call a jumbo. All sizes in between could be considered medium. that's why I was happy to find a source with conversions to volume. The comparisons to powdered and flake onions are handy too.
BTW, we would never throw an onion at a 'steak stealin' dog.' We have a ceramic salt cellar for that purpose.
