I have done the Takenaka finding and digging. They are very tasty and put in a variety of dishes. You have to get them young enough not to be tough. Takenoko is baby bamboo. There was a lot of it around some of the places I taught at. Then you get to clean it and cut it up. But, when all is said and done, you have a lot of delicious material for several different dishes. Those in your picture are absolutely humongous!! I never got them that big because of toughness.