Hello Manu, Welcome to Dubai!
I don't know the cost of start a business in Dubai. But I am sure there is a law and some expensive licences involved, as everything here.
I really never had the intention to sell the cookies. What I wanted is to find a solid explanation to tell friends why I can't sell. If I tell them "give me US$ 50.00 per cookie", it will be rude, but if I explain the time and the cost with facts, they will realize that they cannot afford them, neither their friends. They must wait for a surprise.
Bye for now.