A method of storing a liquid, comprising:
- providing a decanter system having:
- a decanter including a decanter body oriented on an elongate axis, a neck, and a mouth disposed on the neck and defining an opening, the mouth having an angled interior surface, wherein the angled interior surface is oriented outwardly toward the opening at an angle relative to the elongate axis;
- and
- a stopper removably disposed in the mouth of the decanter, the stopper including
- a ring shaped sealing member fabricated from an elastomeric material and having an inner surface, wherein the sealing member has a bulb shape in cross-section, and
- a stopper body having
- a hollow knob configured to be used as a base for the stopper when the stopper is used as a drinking glass when removed from the decanter, and
- a hollow interior portion,
- wherein the sealing member is disposed on an outer surface of the stopper body, with edge portions at a top and a bottom of the sealing member contacting the outer surface of the stopper body, and an air gap disposed between an internal portion of the inner surface of the sealing member and the outer surface of the stopper body,
- wherein the stopper is selectively positioned in the mouth in a first position to form an airtight seal between the sealing member and the interior surface of the mouth,
- wherein the stopper is manually positionable in the mouth between the first position and a second position, the stopper in the second position being disposed further downwards into the mouth disposed on the neck compared to the stopper in the first position, and the airtight seal is maintained in each of the first position and the second position,
- wherein the air gap permits for a flexing of the sealing member and a movement of the internal portion of the inner surface of the sealing member toward the outer surface of the stopper body to compress the air gap against the angled interior surface of the mouth when the stopper is moved by a downward push on the stopper by a user from the first position to the second position, whereby the air gap is uncompressed in the first position and is compressed in the second position, the air gap when compressed causing the stopper to move from the second position to the first position when the user releases a downward push on the stopper without the user pulling the stopper, and
- wherein a pressure within an interior of the decanter is increased when the stopper moves from the first position to the second position, and the pressure is decreased when the stopper moves from the second position to the first position;
- disposing the liquid in the decanter body;
- disposing a filter with flavoring material disposed therein in the decanter body;
- sealing the decanter with the stopper in the first position;
- and
- pushing the stopper downwards in the mouth to the second position.