A little-known fact about William Tell is that apart from being an expert with the crossbow, he was an accomplished chef. One day he had prepared a new dish for his Swiss friends, but, ever the perfectionist, he felt there was something missing with the sauce.

'More berries in the sauce?' he suggested.

'No, no,' they said. 'I think you have just the right amount of berries.'

'More salt, then?'

'No, the amount of salt is perfect,' they insisted.

'Herbs, that's it,' he said triumphantly. 'I should have put in more herbs. What do you think?'

'Hmm,' they pondered, tasting the sauce. 'Perhaps only thyme, Will Tell.'