The vivid green paste isn't matcha or bean paste at all — it's fresh edamame, boiled, shelled and mashed, a preparation distinct to the Sendai area.
Young soybeans (edamame) are boiled, shelled and mashed into a sweet, bright green paste, then spread thick over soft pounded rice cakes.
Takoyaki (Octopus Balls)
Yakitori (Skewered Chicken)
Sapporo Miso Ramen