Terracotta pre-dates most other forms of cookware and gives excellent results. Based on ancient principals of cooking in earthenware containers over a fire, this potato baker has been developed for use in conventional ovens, a clay oven within an oven. Terracotta clay is a porous material which, when soaked in water and then heated in the oven, provides a slow evaporation of steam from the pores, creating a steamy & enclosed environment. This age-old method of cooking is excellent in retaining the full flavour, taste and wholesome goodness of the contents. Each baker is supplied with an instruction leaflet. Hand made in the UK from English terracotta.