Holder for beverage container

A foldable holder for a beverage container comprising:

• a fastening plate having a substantially planar shape adapted for vertical mounting;
• a supporting ring coupled pivotably to the fastening plate;
• a holding bracket having a first end coupled pivotably to the fastening plate;
• and
• a supporting plate coupled pivotably to a second end of the holding bracket and extending a length substantially the same as a length of the holding bracket;
• wherein the supporting ring and the holding bracket share a pivot axis extending from the fastening plate;
• wherein the supporting plate is coupled to a remote end of the holding bracket so as to be pivotable counter to a pivoting direction of the supporting ring;
• wherein the holding bracket and the supporting plate are disposed radially within the supporting ring when folded into a retracted state;
• and
• wherein the holding bracket selectably holds the supporting plate in three positions including 1) flush against the fastening plate, 2) in a plane perpendicular to both the fastening plate and the holding bracket and which is below the pivot axis, and 3) in a plane perpendicular to the fastening plate which includes the pivot axis.