It's just the low sodium Spam that you cross cut but not all the way thru. I season my half, the wife likes hers plain. Cook until you like the color/bark.
Thanks! A tiny bit of cayenne, Williams Rib Tickler, tiny bit of course black pepper and a little Fiesta Rib Rub. I never wrap. I only add the pepper if i don't see enough on the ribs from the Rib Tickler and only put cayenne on the top.