In his lunch choices, sw often reveals that he is quite the mincing metrosexual-about-town. It's all falafel this and quinoa that.
I assume that in reality he's actually just eating a few boiled spuds his missus has wrapped up in a manky old bit of canvas with a paper twist of salt, but he doesn't want to shame himself in front of the bàstard English, so he pretends he's eating all these global delicacies.