Japanese water cooling pitchers, called "yuzamashi", are used to lower the temperature of freshly-heated water before using the water to steep tea leaves. The idea is that after water is heated, it is poured first into the yuzamashi, and then from the yuzamashi it is poured onto the tea leaves in a teapot. Yuzamashi are especially helpful when preparing Matcha, Gyokuro and Sencha tea, which require a cooler water temperature for steeping.
This water cooling pitcher is handcrafted from natural clay by the well-known Gyokko Studio in Tokoname (Aichi Prefecture). It is partly covered with a flowing ash glaze around the top of the body. The result of glazing pattern makes for a unique appearance and adds texture interest.