A method includes obtaining a cartridge having a first fluid within an interior of the cartridge, where the cartridge includes a valve; obtaining a container having a second fluid within an interior of the container; obtaining a pressurizer; installing the cartridge within the pressurizer; installing the pressurizer within a container opening at a top end of the container; and opening the valve in the cartridge, to flow the first fluid within the interior of the cartridge through a first flow path in the valve, and a second flow path in the pressurizer into the second fluid in the container.

A pouch container generating hydrogen water is provided. A beverage containing at least water and a hydrogen generating substance that reacts with water to generate hydrogen gas are contained in a pouch container that is sealed. Even when hydrogen in a gas form leaks from a sealed part or the like of the pouch container to the outside, new hydrogen gas is generated by the reaction of the water and the hydrogen generating substance in the pouch container. Hydrogen water having sufficient hydrogen gas dissolved therein can be provided even after the long-term preservation. For example, the hydrogen generating substance may be contained in a straw or may be kneaded into an exterior sheet material.

A pouch container generating hydrogen water is provided. A beverage containing at least water and a hydrogen generating substance that reacts with water to generate hydrogen gas are contained in a pouch container that is sealed. Even when hydrogen in a gas form leaks from a sealed part or the like of the pouch container to the outside, new hydrogen gas is generated by the reaction of the water and the hydrogen generating substance in the pouch container. Hydrogen water having sufficient hydrogen gas dissolved therein can be provided even after the long-term preservation. For example, the hydrogen generating substance may be contained in a straw or may be kneaded into an exterior sheet material.

To provide a resin container and a method for manufacturing the same with which it is possible to generate more effervescence than hitherto. This resin container is provided with: a resin container main body inside which is formed an accommodating space that is hermetically sealed using a cap; and a textured region which is formed on an inner surface of the container main body and is formed from a rough surface.

To provide a resin container and a method for manufacturing the same with which it is possible to generate more effervescence than hitherto. This resin container is provided with: a resin container main body inside which is formed an accommodating space that is hermetically sealed using a cap; and a textured region which is formed on an inner surface of the container main body and is formed from a rough surface.

Fluid container (1) for arrangement in a beverage container (2), wherein the fluid container (1) extends in an axial direction (3) between a first end (4) and a second end (5) and has a first volume (7) for storing a fluid (8) inside a fluid container wall (6); wherein the fluid container (1) has, between the first end (4) and the second end (5), a central region (9) which has, in the axial direction (3), a constant cross-sectional area (10) which extends transversely to the axial direction (3), and a longitudinal axis (11) which extends parallel to the axial direction (3) and runs through a centroid point of the constant cross-sectional area (10).

Fluid container (1) for arrangement in a beverage container (2), wherein the fluid container (1) extends in an axial direction (3) between a first end (4) and a second end (5) and has a first volume (7) for storing a fluid (8) inside a fluid container wall (6); wherein the fluid container (1) has, between the first end (4) and the second end (5), a central region (9) which has, in the axial direction (3), a constant cross-sectional area (10) which extends transversely to the axial direction (3), and a longitudinal axis (11) which extends parallel to the axial direction (3) and runs through a centroid point of the constant cross-sectional area (10).

This can for an effervescent beverage includes an upper surface, a lower surface, and a middle part. On the inner surface of the middle part, a plurality of first recesses is formed, each having a diameter of at least 5 μm. The number of the plurality of first recesses is 200 to 2,000 per 1 mm.sup.2.

This can for an effervescent beverage includes an upper surface, a lower surface, and a middle part. On the inner surface of the middle part, a plurality of first recesses is formed, each having a diameter of at least 5 μm. The number of the plurality of first recesses is 200 to 2,000 per 1 mm.sup.2.

Beverage container (1), at least comprising a housing (3) having a bottom (4), a lid (5) and a wall region (6) connecting the bottom (4) to the lid (5); wherein the beverage container (1) has a first volume (7) which can be partially filled with a liquid (9); wherein the beverage container (1) further comprises a pressure container (10) having a third volume (11), said pressure container being arranged in the first volume (7); wherein the pressure container (10) has at least one opening (12) which connects the first volume (7) and third volume (11) and which has a diameter of less than 0.2 millimetre.