Onigiri are the perfect Japanese snack food. Portable and (generally speaking) healthy, they consist of a small ball or triangle of rice containing one of a huge variety of fillings, wrapped in seaweed or coated with some kind of seasoning.
Most of us eat machine-made onigiri, if we are in Tokyo. There are some people who grumble about the loss of human touch in this great snack. So, here is a shop that grabs the resulting market opportunity.