Soba roll cake containing plenty of buckwheat tea wrapped in sponge cake made from 100% buckwheat flour. It can be said of the ultimate cake which extremely sticks to the use of buckwheat. The sponge dough made from very flavorful pure buckwheat grown in Nagano gives you a texture of delicacy and softness with gentle flavor of buckwheat as soon as you take a cake into your mouth. You feel it very soft and melted on your tongue.