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What are these called where you are?
(i.imgur.com)
From Fife so these are rolls. Roll on sausage, roll on bacon etc. Heard them called different things in different parts of UK.
I'm inclined to agree with you, but I'm not sure if it looks crusty enough.
Id call a crusty cob a...well, a crusty cob. A normal (none crusty) cob is just a well, a cob.
Still. We're splitting hairs here. Mon' the Cob!.