Hi Guys,
Maybe a different approach could be used for the next lot of group cooking classes with Az.
Why not see how much it would cost to get Az to come to one of your houses instead of the restaurant and get him to make the base and some curries there. That way you could definitely say one way or another whether the result can be done at home or not?
Get a good video camera and video the whole lot for future reference too.
I've recently recorded some videos in the restaurant, we don't use hot oil to fry spices in the making of dishes, well with the exception of popping some mustard seeds or the like, and the taste is great.
Cheers,
Mark