Apparatus and method for closing a bottle with a flexible cylinder

A method comprising:

• stretching a bottom ring of a bottle closer apparatus over a neck of a bottle, where the bottle closer apparatus includes:
• a cylinder of flexible material, where a diameter of the cylinder is an outside diameter of the neck of the bottle;
• a solid top surface of the cylinder with a top ring of the flexible material extending around a circumference of the cylinder along a cylinder wall, an underside of the solid top surface containing a centered raised circle an inside diameter of the neck of the bottle;
• an open bottom end of the cylinder with a bottom ring of the flexible material extending around the circumference of the cylinder along the cylinder wall;
• a void inside of the cylinder, extending from below the solid top surface through the open bottom end;
• and
• a first elliptical opening in the cylinder wall, the first elliptical opening extending around at least 50% of the circumference of the cylinder;
• pulling the bottom ring down the neck of the bottle until the solid top surface is snug on a top opening of the neck of the bottle;
• and
• lifting the solid top surface by stretching the first elliptical opening and pushing the top opening in the neck such that the top opening of the bottle extends through the first elliptical opening.