James Martin's Great British Adventure

James concludes his culinary trip in Cornwall, where his companion is Paul Ainsworth

James concludes his culinary trip in Cornwall, where his companion is Paul Ainsworth, who is on hand to taste the award-winning oysters produced by Porthilly Farm. James stops in on his favourite fish supplier, Flying Fish, to see how operations are run and picks up some of today's catch to cook gurnard and red mullet with orange-charred chicory and cauliflower puree