Right, had a bit of a tantrum as I couldn't get the damn machine to turn on! Eventually did it, gawd knows how, I'd been pressing the on button with varying degrees of pressure... Before I went to the shop I checked my cupboard for oxo and saw a packet. Should have checked the contents though as there was only one bloody cube instead of two! I have shoved a butter bud in there as well so... will have to wait and see now, 20 mins to go.
I'm betting the potato will be raw.