Recovery soup

I have a vague notion that I read somewhere that lentil soup is a perfect recovery meal for the cyclist returning from a training ride. So as the household's cycling commuter is now spending his Sunday mornings churning along the roads building up his muscles/stamina/Lycra so that he can take part in the Etape Loch Ness in April, I decided it was a good excuse to make a pot of soup. Not that it's unusual for me to make a pot of soup on a Sunday, happens most weeks.