Food Unwrapped S17E02 - Icing, Soy Beans, Hemp-based Foods

Matt Tebbutt reveals the secret behind the iced writing that is so perfect on every supermarket birthday cake, while Kate Quilton looks at the growing trend of hemp-based food products. Jimmy Doherty heads to Japan to establish why soy is in so many of the public's favourite foods and learns how this little bean could be health enhancing.