Customizing is possible as long as we have what a customer wants in the place.

Allergies at the moment is a big thing in the UK, we have to make sure all food is clearly labeled and staff know what has gone into everything that is made by them.
There was a takeaway owner a year or so ago who get sent to prison for claiming there was no nuts in his curry, a young girl died and he went to prison for his neglect.
I wouldn't want that to happen to anyone, I am pretty much a man who keeps everybody in mind, so I will be on it to make sure my customers are looked after. :D