Terracotta in this container is approximately always extremely very well white clay. Inferior "clay" pipes are in fact made from china slip poured into a cast. These are absorbent, of extremely near to the earth excellence, and pass on surplus flavors to a smoke. Superior clays, on the additional hand are complete in a physical procedure that requires thrashing all air out of the clay, hand-rolling every pipe previous to molding it, sharp with a very well wire, and cautious firing. conventionally, clay pipes are un-glazed. Clays burn "hot" in contrast to other types of pipes, so they are often tricky for most pipe-smokers to use. Their proponents claim that, unlike additional materials, a well-made clay pipe gives a "pure" smoke, with no taste adding up from the pipe bowl. In adding up to aficionados, reproductions of past clay styles are used by some re-enactors. Clay pipes were once careful throwaway items and the great quantities superfluous in the earlier period are often used as an aid in dating by manufacturing archaeologists.