The bamboo is cut down in its third winter, freed of oil by boiling, dried in the open air so that it becomes shiratake (white bamboo), and allowed to rest for a while (several months to years), before being processed.
通常は3年目の冬に伐採し、煮沸して油を抜いてから露天乾しにして白竹にし、その後しばらく（数ヶ月～数年）寝かせてから加工する。