I know that for some people nothing feels more restoring than something warm and unchallengingly bland, but when it's succour and sustenance I need, it's spice that I want. This soup, tom yam - the culinary equivalent of Friar's Balsam - clears the tubes and brings fire to the jaded soul. And there's nothing like a bit of searing heat to push away any hungover seediness. It's good for those days when you're thick with cold, too.
Recipe posted by Nigella