==Flawed statement== 
 "Unglazed teapots (like Yixing) should never be washed in a dishwasher or soapy water due to the porous nature of its clay, since there is no glaze used{dubious}}." 
 This is wrong for a number of reasons: 
 * It is supported by any references (which isn't surprising given it's mianly incorrect) 
 * "Nature of clay" Well if the teapot has been fired, which it will have, then t is not clay. It is ceramic. 
 * Unglazed ceramic can be non-porous, for example porcelain.