Abstract: A concentrated coffee in single-serving container product and a method for manufacturing the product. An accommodation part of the container is filled with a concentrated coffee liquid. An opening of the accommodation part is sealed with a peelable lid material. The method includes blending a concentrated coffee liquid and a stabilizer, homogenizing the concentrated coffee liquid after the blending, a primary sterilization of the concentrated coffee liquid after the homogenizing, filling the accommodation part with the concentrated coffee liquid after the primary sterilization and sealing of the opening with the lid material, and a secondary sterilization of the concentrated coffee in single-serving container after the filling. In the filling step, a space other than that filled by the concentrated coffee liquid in the accommodation part is filled with an inert gas.