Paralleling a steep mountain stream there are rock terraces running
all the way up the mountainside, forming shallow aquaculture pools
at each level providing the ideal environment for wasabi culture, a
continuous flow of fresh cold water. Wasabi is an expensive cash crop
which is turned into a
very hot condiment paste used with a variety of Japanese dishes.
This shows the beauty of traditional Japanese culture.
Here are more plus one on growing wasabi in the US Pacific Northwest