BLUNGING - Clay and water.
Blunging is to mix clay and other products with water to make slips. It can be done mechanically or by hand using a metal beater or any other instrument. Clay slurries need a considerable amount of energy to achieve a slip in which water has penetrated well between all particles. When a machine is used the liquid passes through a fine sieve to separate bits that have not dissolved and any other foreign bodies. If done by hand it has to be passed through a sieve.