The purity and transparency of Nymphenburg porcelain can only be achieved if the composition of the porcelain material and the firing technique are optimally coordinated. The different firing processes are decisive here: A first so-called bisque firing hardens the porcelain greenware at 950 ° C. Then they can bei immersed in a glaze bath and fired again at around 1,400 ° C for up to 36 hours. During this second firing the porcelain shrinks to approximately one sixth of its size and the glaze fuses with the porcelain. After painting, the porcelain is fired for the last time. Some colors change significantly in the heat of the kiln. It takes the greatest skill of a painter to know how to mix and apply colors and how they develop during firing.