Peru's immense bio-diversity means that it is a treasure chest of fruits and grains, the marvellous properties of which are only now beginning to be appreciated by Western scientists and consumers. Supermarkets are beginning to feature products containing quinoa and maca - two famous Incan superfoods from the Andes mountain region - for example.

Meanwhile, in the Amazon rain forest, nutrient-rich 'superfruits' have been nourishing and healing the indigenous population for centuries.