I lived near the Firth of Lorne. That Lorne (square) sausage went very nicely with the black pudding and fruit pudding (all fried).
Tim,our local butcher makes what we call breakfast slice, basically it's square sausage with the black pudding in the middle,which I have with
'broon sauce' on a buttered morning roll washed down with a big mug of tea after work on a Saturday morning.(This is my once a week 'treat')
I'm not so big on the fruit pudding though.