For 6 pieces:

They are a bit finicky to make. You need to cook the 葛 half-way, so that you can form it around the あん. If you undercook it, it'll tear easily, if you overcook it, it'll be hard to form. Also, make sure the あん is quite dry, it's very odd to go through the soft 葛 only to reach something softer still.

Variations