On the other hand, it is difficult for middlemen to intervene in the purchase of foods such as fish and so on because of the need for freshness, and when there were not minutely divided circulation systems as there are now, even tunas were sometimes purchased in units of one fish.
その一方で魚など食材の買い付けでは鮮度の面から中間業者が介在しにくく、現代のように小分けした流通形態が無かった時代には、マグロでも「一本」という単位で仕入れられることもあった。