Japanese eat roots of tree?!

kinpira-gobou
Kinpira Gobou

Most of Japanese know the vegetable which looks like roots, and this is Gobou called greater burdock in English.  I was surprised that I heard any countries except Japan use Gobou for cook.  And I just realized we are eating roots.  Gobou was first imported from China and they were using Gobou as a herbal medicine.  To be honest, Gobou is little bitter and it really tastes like the ground.  However, his is famous for much dietary fiber and it is good for stomach.  Japan has various menu using Gobo like Kinpira, Torigobo and so on.  So I would like foreigners to try Gobo once.