Hugh faces River Cottage chef Gill Meller and guest chef Florence Knight, from London's Polpetto. The star ingredient is beetroot. The recipes are beetroot, hardboiled egg and anchovy salad; a marinated beetroot, with blue cheese and poppy seeds; and thick beetroot, walnut and yogurt soup And the judge is Charlie Hicks, a man with 30 years of experience as a green grocer under his belt.