Catch this week's Countryfile from the Chilterns on BBC1 on Sunday 14 November at 6 30pm.
It features Strictly Come Dancing star Matt Baker and celebrity chef Antony Worrall Thompson, Head Chef at gastro pub The Greyhound near Henley-on-Thames.
It's a heart warming tale of some of Britain's oldest sweet chestnut trees in their autumn glory and how to cook up a really wild and totally free seasonal treat with the nuts.
Find ancient sweet chestnut trees