Jimmy Doherty travels to the olive groves of Italy to ask locals what they think of some of the extra-virgin oil sold on UK supermarket shelves. He also visits Holland, where insects are being farmed for human consumption, and discovers some tasty facts about these six-legged treats. Kate Quilton heads to Louisiana to reveal the secrets of its famous hot sauce, and asks if drinking a cup of warm milk before bed helps people sleep. Matt Tebbutt uncovers the surprising truth about how much truffle is in truffle oil, and finds out whether wild boar really is wild.