The foundation of Wagashi (Japanese confectionery) lies in "An" (paste) made by boiling adzuki beans. "Tsubu-an" leaving the bean skins to enjoy the flavor, and "Koshi-an" pursuing a silk-like tongue-feel by removing the skins. High-quality adzuki like those from Tokachi, Hokkaido, feature elegant sweetness without harshness.
・Tohoku's Green Jewel "Zunda":
An absolute must-see is "Zunda An" made by mashing edamame (unripe soybeans) and mixing in sugar. It's a regional sweet centered in the Tohoku region like Miyagi (Sendai) and Yamagata, but its vivid green color, rich aroma unique to edamame, and chunky texture become addictive once eaten. Coating mochi (rice cakes) is standard, but recently "Zunda Shakes" are also explosively popular.