It is the grand final and the four remaining potters have just three tests left before one is crowned the winner of the Great Pottery Throw Down. For their main make, Kate Malone and Keith Brymer Jones serve up their hardest task yet for the potters - a mark of how far they have come. They want each potter to make an original twelve-piece tea set out of porcelain, a true test of a potter's skills. The teapot is the toughest item to make, with a body, spout and lid, while the white and delicate porcelain is known as the trickiest of all clays to work with. The other tests don't get much easier. They face a spot test from hell when they must cut intricate and decorative designs into leather-hard porcelain vases using a technique known as 'the devil's work'. For the final throw down, they have just 20 minutes to make three high-shouldered jugs - one of the hardest shapes to throw at the wheel.