it does look like a slice of my Aunt Rosie's fruitcake
or a good seed encrusted loaf of granary bread
This all suggests pleasing images of bakers using shuttering to pour the mix into. "See how the wood grain leaves an imprint on the sides of the bun..."
or perhaps a slice of brawn that's gone off a bit
did you know that in America they call brawn "head cheese"? i know, why on earth? not very appetising!
Like it's appetising to begin with! Actually, I've never knowingly looked at brawn; too southern and soft. [looks at brawn] Ugh! but yeah, you're right. Ugh, again!