Not real kilts?

[Beery]

Well my mum made good Yorkshire puddings, and she is from Liverpool, so bang goes that theory!!

Did you compare them to Yorkshire puddings made by a Yorkshireperson?

Anyway, the purist in me would argue that although they may indeed have been good, and they may well have even been puddings, for them to be 'Yorkshire' puddings, they have to be made by a Yorkshire person. The ingredients don't determine the pudding's county of origin - only the cook can imbue the pudding with its Yorkshireness. ;)