ughhhh. I feel that in the interest of full disclosure I must tell my blogging pals that my tummy was upside down for two days after I ate the white castle. We did scrape the onions off, but some onion juice must have stayed on the meat. So, while the little square patty and bun were delicious, I would advise my pals to exercise caution.
Muzzer notes: it might have helped if he had chewed the thing, rather than gulping it whole!