Adjustable beverage holder

A beverage holder comprising:

• a hollow tubular body having a closed end, an open end opposite the closed end, and an axis extending from the open end to the closed end;
• a plurality of projections extending radially inward from an interior surface of the hollow tubular body and configured to contact a sidewall of a drinking vessel residing within the hollow tubular body, wherein
• the plurality of projections have a square cross section and an inner surface that extends along a first arc that is concentric with a second arc formed by the interior surface of the hollow tubular body,
• the plurality of projections are circumferentially arranged on an inner surface of the hollow tubular body on a single plane that is transverse to the axis of the hollow tubular body, and
• the plurality of projections are spaced from the closed end and spaced from the open end a distance that defines a bottom portion of the hollow tubular body and a top portion of the hollow tubular body, wherein the top portion is sized to accommodate a drinking vessel, and
• a removable insert configured to seat within the hollow tubular body against the plurality of projections such that the removable insert is spaced from the closed end and spaced from the open end, wherein the removable insert defines a passage configured to permit fluid flow through the removable insert while the removable insert supports a bottom surface of the drinking vessel.