This is a Japanese delicacy Karashi-Renkon. Ren-kon is literally Lotus roots. The dishes which used lotus roots are very popular especially among foreign customers. I guess it is healthy fibered food and the fresh crisp texture make food good. This is also used lotus roots. Karashi means Japanese mustard and in the halls Japanese mustard is refilled. It has been born in the prefecture of southern part of Japan. It was made for a sickly lord living in the castle. It is the mustard smelling mouth watering local food. Now it becomes a well-known food.