In the methos of early days, the process to make Black Raku is to souse tetsuyu (glaze containing iron) made of black stone in Kamo-gawa river on the bisque of work and then dry it in the shade, and when it dries, the work is dipped into tetsuyu again, and after this process is repeated 10-odd times, then the work is fired at about 1000 degrees Celsius in a kiln.
初期の製法としては、素焼き後に加茂川黒石からつくられた鉄釉をかけて陰干しし、乾いたらまた釉薬をかけるといったことを十数回繰り返してから1000℃程度で焼成する。