A device is set out which considerably increase the exchange surface for aerating or oxygenating wine compared to prior art devices or decanters. In the invention, a series of components are mounted on top of each other, whereby wine poured from a bottle flows in sequential order, by force of gravity, through these components until it flows into glasses to be served to consumers. The structure of these components is such that each component enhances exposure to air and maximum oxygenation of the wine flowing through it.

A wine aerator comprises a spherical aerating member and an open-mouthed hemispherical receptacle which releasably receives the aerating member. The receptacle has an inner surface, an outer surface, and an outlet. Projections project from the inner surface of the receptacle and support the aerating member within the receptacle. Ribs extend along the outer surface of the receptacle and space the receptacle apart from a wine glass.

A decanting vessel has an internal pump for recirculating a beverage such as wine and aerating it within the decanter.

Initial liquid containing fine bubbles is produced by mixing water and air (step S11). Fine bubbles have diameters of less than 1 m. The density of bubbles in the initial liquid is measured (step S13), and when the measured density is less than a target density (step S14), the initial liquid is heated and reduced in pressure so that the liquid is vaporized (step S15). As a volume of the liquid decreases, the density of fine bubbles increases, and high-density fine bubble-containing liquid is easily obtained. Alternatively, by increasing the density of fine bubbles in the initial liquid with using a filter that does not pass all fine bubbles, high-density fine bubble-containing liquid is easily acquired (step S15). When the density of bubbles in the initial liquid is greater than the target density, the initial liquid is diluted (step S16).

Disclosed herein is an assembly for selectively aerating a liquid including a base member a reservoir adapted to receive the liquid. The assembly also includes a support member non-rotatably coupled to the base member and a diverter member coupled to the support member and rotatable between a first diverter position and a second diverter position. The diverter member has at least one primary aperture and at least one secondary aperture. The assembly additionally includes an aerator member non-rotatably secured to the diverter member, the aerator member having an aeration aperture. In the first diverter position, a portion of the liquid in the reservoir flows through the primary aperture. In the second diverter position, a portion of the liquid in the reservoir flows through the secondary aperture, and though the aeration aperture.

A fine bubble-containing liquid generating apparatus includes a generator including a mixing nozzle for leading in gas and pressurized liquid and a fine-bubble generating nozzle for discharging liquid that contains fine bubbles of the led-in gas, a circulation passage for returning liquid discharged from the fine-bubble generating nozzle to the mixing nozzle in a state in which the liquid is isolated from outside air, an extraction part for extracting, as a fine-bubble containing liquid, part of liquid circulating through the generator and the circulation passage, and a replenisher for replenishing the circulation passage with liquid to maintain the amount of liquid circulating through the generator and the circulation passage. With this configuration, it is possible to continuously generate a fine-bubble containing liquid that contains a high density of fine bubbles.