chief councillor of state
Historical title in the imperial court; a high-ranking official below the 大臣 (daijin). Used in contexts of classical Japanese history and literature.
In the Heian period, the chief councillor of state played a central role in government affairs.
large-grained adzuki bean
A variety of adzuki bean with larger grains, often used in traditional Japanese sweets. The name is said to derive from the bean's resemblance to the official's cap or the high status associated with the title.
Dainagon adzuki beans are characterized by their large grains and refined sweetness.