ooooh, well I thought if I ate half a big tub of yoghurt (200/250g) you'd all think I was a little piggy. Well, I am, but that's beside the point 
Thanks for the tip about the sausages novelty, I might get a packet of those and test. Gosh, I never knew that about the skins! Come to think of it, I didn't poke the skins of the last Waitrose ones I had and they came out just fine.
I need to lay my hands on a celeriac...