How to eat: sausage rolls

This month, How to Eat is enjoying a sausage roll. Is there any justification for serving them cold? Is riesling the best wine pairing? And can you ever deploy a sausage roll in a meal, the same way as you would a pie? (spoiler: no)
US chain Trader Joe’s new ‘puff dogs’ ridiculed for being sausage rollsSausage rolls get everywhere. Not just the pastry, which, following a moment of petrol station weakness on the A50, can work itself into your clothes’ every crevice, but cu