Jimmy is in Ecuador, the largest banana exporter in the world, to looks at claims that the banana could one day be used in the fight against a number of viruses including HIV and influenza. Kate looks for the food industry's Holy Grail, a meat substitute that actually tastes of meat.
Kate is in Japan to find out more about tofu, as she wonders how they turn green soy beans into something so white and creamy. Jimmy looks at reports that supermarket ready meals have nearly doubled in size since the 1950s. Matt finds out about a new kind of milk, which is claimed to be easier to digest.