PROBLEM TO BE SOLVED: To provide a structure for easily adding seasoning since seasoning in a bag shape scatters or the like when it is opened or added in the case that the seasoning needs to be added when eating fermented soybeans.SOLUTION: In a preservation method, a recess for preservation is provided on a lid body upper surface of a fermented soybean container to preserve seasoning, and an exit hole seal of a body and lid joining part is peeled and opened by opening a body container lid. Thus, by squeezing a squeezing sheet of the lid body upper surface, the seasoning is added to fermented soybeans inside the body from an exit of a preservation part.COPYRIGHT: (C)2012,JPO&INPIT【課題】納豆を食す場合において、薬味の添加が必要な場合、袋状の薬味は開封や添加時、飛散などが起こった。薬味の添加しやすい構造を考える必要がある。【解決手段】保存方を薬味袋から、納豆容器の蓋体上面に保存用の窪みを設け薬味を保存し、本体と蓋合わせ部の出口穴シールが、本体容器蓋を開けることで、保存部出口シールが剥がれ開口する、これにより蓋体上面の絞り出しシートを絞りだすことで、保存部出口より本体内部の納豆に添加できる構造とした。【選択図】図1