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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.
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!.