Butterbur is a perennial herb that blooms in spring.
It is one of the oldest vegetables in Japan, and has long been popular as a wild vegetable that grows in the mountains.
It is still cultivated today as butterbur.
The buds emerge from the ground around February and are edible as butterbur sprouts.
After the flowers have finished, the plant produces 15 to 30 cm rounded kidney-shaped leaves, and the petiole, which grows during this period, is called "fukinoto.
The petiole that grows during this period is edible as butterbur.
Butterbur is dioecious, and is divided into male and female plants.
The flowers of the female plant can be distinguished by the white head flower and the...