The remarkable tea connoisseur Emperor Song Huizhong regarded this tea bowl style as the best among all tea bowls. He emphasised on the importance of rabbit hair glaze pattern which can accentuate the tea and foam color.
 
It is made of clay from Jian Yang of Fujian which contains iron ore. The Jian Kiln started almost 1000 years ago. Jian teawares are famous for its high density with strong structure which gives high pitch metallic voice when crashed. The thick and dense structure of the teawares can keep the warmth of the tea and hence give long-lasting foam.
 
It is said that each Jian teaware is unique as there can never be any identical Jian teaware in the world as the chemical reaction inside the kiln is highly dynamic which give different patterns and colors.
 
Origin: Jian Yang, Fujian, China


宋徽宗喻建盞兔毫盞為茶碗中最上者，在宋徽宗的《大觀茶論》中寫道：
「盞色貴青黑，玉毫條達者為上，取其煥發茶采色也。底必差深而微寬。底深則茶直立，易以取乳；寬則運筅旋徹，不礙擊拂。然須度茶之多少，用盞之大小。盞高茶少，則掩蔽茶色；茶多盞小，則受湯不盡。盞惟熱，則茶發立耐久。」

宋徽宗在《宣和宮詞》中以讚道：
「螺鈿珠璣寶合裝，琉璃瓮里建芽香， 兔毫連盞烹雲液，能解紅顏入醉鄉。」

選用福建建陽的富含鐵礦的黏土製成，建盞始燒於五代末北宋初年，建盞胎骨厚實堅硬，叩之有金屬聲，俗稱“鐵胎”，手感厚重；含砂粒較多，故胎質較粗糙，露胎處手感亦較粗。由於建窯黑瓷中的建盞胎體厚重，利於茶湯保溫；深邃的顏色能彰顯出茶湯的泡沫與顏色。
全宇宙沒有兩隻完全可以相同的建盞。每一隻建盞，即使材料和步驟相同，但入窯之後，出來的建盞還是不會有相同的。
 
窯內溫度和氣氛的微妙差別，都可能導致不同的釉色。兔毫釉、油滴斑，亦或是烏金釉和雜色釉，都是獨立的個體，各自綻放光芒。
 
產地：中國福建建陽