Perhaps it doesn't matter, as truly the scenes involving Coogan & Brydon's banter across the table from each other are the meat of the movie and even more appealing than the actual food preparation. As well as some of Brydon's dry asides, like -  A waiter describes the latest dish brought to the table as cooked in it's own juices- Brydon: If I were cooked in my own juices, I'm sure I couldn't manage a thimbleful.