I'm afraid I'm one of those who finds the notion of fizzy drinks with breakfast stomach turning.

There's a woman who used to get the same train as me every morning. Without fail, she'd produce a massive ham sandwich and a diet Coke out of the wheelie suitcase that she so proficiently managed to block entire platforms with.

I don't know why it seemed to wrong. I'd quite happily have a bread and cold meat with sparkling water and coffee type breakfast in Germany, for example. It's not a huge leap.