Raku is a Japanese pottery tradition used in Japanese Tea Ceremonies – but since Raku came to the West, it changed to how we know Raku today. It is important that the Raku Kiln can be easily opened, because, when the artwork in the kiln has reached the right temperature (over 1000 degrees Celsius), it must be quickly removed and put into a metal or tin container with combustible material. A lid is placed on the container, which helps the pots to further bake. It is also important to starve the space of oxygen, to allow the pots to reduction fire. This effect creates the certain colours and patterns.