It wont work, heres a few obvious reasons...
Somebody finds a willing chef (who is the judge on the chef, will we all be happy with the choice?).
We pay the chef, the chef shows/tells, what if he doesn't come up with anything we havn't allready tried, you still have to pay the chef, what then another whip round for a second chef?
The chef gives us a secret, you think well done weve cracked it. How many times have you read posts in here or anywhere where somebody has come up with an idea only to have it flamed from the word go without anybody else actually trying it, worse still, this post then becomes such a long drawn out flame war that nobody can then make any sense of the original idea and it gets lost.
Good idea though. I just don't think it'll get any further than this stage.