Not posted for a while but thought this worth a mention.
Had a new guy start work next to me his mother and father run a Chinese takeaway where he also works in the evening, the conversation eventually got around to curry and he was surprised at my passion for Indian, anyway, I also showed interest in Chinese cooking and asked how they get the lovely flavour that you can't seem to emulate at home ( as per Indian :

) and he said we don't wash our pans

Not with washing up liquid anyway just hot water and a wipe around with kitchen roll, this keeps the pans seasoned and is good for the flavour of the cooked food.
Of course they cook every day so I doubt any bacteria has much of a chance to get a hold but if you only cooked once a week it might not be a good idea!
Anyway could this be another % towards that final 5% we all been trying for .