Good food for free has been the holy grail of foragers since our ancestors first climbed down from the trees.

I simply believe food is too good to throw away - and Christmas leftovers can be a gastronomic opportunity for the well-skilled kitchen forager. With a little imagination, there are a million ways to use up leftovers rather than bin them.

For me no good food is illuminated without acidity.

Patience is the secret to good food.

There's no such thing as 'bad' food or 'good' food.

We domesticated pigs to turn food waste back into food. And yet, in Europe, that practice has become illegal since 2001 as a result of the foot-and-mouth outbreak. It's unscientific. It's unnecessary. If you cook food for pigs, just as if you cook food for humans, it is rendered safe. It's also a massive saving of resources.