The clay that is used to make your favourite pieces of Emma Bridgewater pottery will have travelled from Wales, Cornwall and Staffordshire. It is mixed up in huge quantities in the factory, in a machine rather like a giant food processor, and the slip casting technique that is used to create our beautiful shapes is time consuming and complicated. Bigger shapes take longer to cast than the smaller shapes, so casting a teapot is a more time consuming process than casting a baby mug, for ...