Hugh Fearnley-Whittingstall returns with grow-your-own ideas - the very ethos he has championed since the first River Cottage shows more than two decades ago. There's a buzz around River Cottage with a visit from a wildlife revolutionary Matt - who puts Hugh to work with a chainsaw transforming a tree trunk into a brand-new home for some indispensable insects. Chef Gelf helps put the finishing touches to the new outdoor kitchen, where the food promises to be the freshest yet.