BEVERAGE CONTAINER, AND METHOD FOR ASSEMBLING BEVERAGE CONTAINER

This beverage container comprises an outer container having a first opening, a fitting, and an exchange component disposed within an interior space in the outer container. The fitting is provided with an attachment part attached to the first opening in the outer container, a second opening, an annular portion that protrudes outward from the second opening and links the second opening and the attachment part, and a beverage retrieval tube extending toward the bottom of the outer container. The exchange component is provided with: a seal member that is capable of sliding along the longitudinal direction of the beverage retrieval tube and annularly contacts the outer surface of the beverage retrieval tube at an attachment position; a cylindrical body that holds the seal member and is supported by the beverage retrieval tube via the seal member positioned at the attachment position; and a bag body for accommodating a beverage, the...