1. A beverage dispensing system comprising:
a container;
an attachment mechanism coupled to the container, the attachment mechanism comprising a receptacle, a cutting portion, and a cartridge pressure member, wherein the cartridge pressure member is hingedly attached to the receptacle and rotatable between an open position and a closed position; and
a cartridge adapted to engage the attachment mechanism at the receptacle, the cartridge comprising a chamber, an opening, and a pierceable cover located over the opening,
wherein in the closed position, the cartridge extends through an opening of the cartridge pressure member, and the cartridge pressure member engages the cartridge and pushes the cover against the cutting portion, thereby opening the cartridge and dispensing its contents into the container.
2. The system of claim 1, wherein the cartridge holds one or more beverage ingredients.
3. The system of claim 2, wherein the one or more beverage ingredients includes syrup, paste, powder, or granules.
4. The system of claim 2, wherein the one or more beverage ingredients includes nutrients, vitamins, herbs, supplements, particulates, gels, or fruit flavor bases.
5. The system of claim 1, wherein the cartridge comprises at least two chambers, and each chamber holds different beverage ingredients.
6. The system of claim 2, wherein the receptacle further comprises a seal configured to prevent leaking of the one or more beverage ingredients from the system when the cartridge is opened.

7. The system of claim 1, wherein the cutting portion is configured to pierce the cover when the cover is pushed against the cutting portion.
8. The system of claim 1, wherein the cartridge pressure member is disposed on a spout portion that comprises a spout, and wherein the spout aligns with the container opening when the cartridge pressure member is in the closed position.
9. The system of claim 1, wherein the cartridge pressure member comprises a silicone dome.
10. The system of claim 1, wherein the cartridge pressure member engages a rim of the cartridge to push the cover against the cutting portion.
11. A beverage dispensing system comprising:
a container with a first end and a second end opposite the first;
an attachment mechanism coupled to the container at the first end, the attachment mechanism comprising a closure base and a cartridge pressure member, wherein the cartridge pressure member is hingedly attached to the closure base and rotatable between an open position and a closed position, wherein, in the closed position, the cartridge pressure member is configured to engage a cartridge to dispense contents of the cartridge; and
a storage compartment coupled to the container at the second end, wherein the storage compartment comprises an internal space for storing a cartridge.
12. The system of claim 11, wherein the internal space is configured to store at least a second cartridge and a third cartridge.
13. The system of claim 11, wherein the storage compartment is coupled to the second end by an interaction of threads on the storage compartment and matching threads on the second end of the container.
14. The system of claim 11, wherein the storage compartment is translucent.

15. A cartridge for a beverage dispensing system, the cartridge comprising:
a body defining an inner chamber;
an opening into the inner chamber; and
a foil seal disposed over the opening, the foil seal being pierceable to release contents of the cartridge, wherein the foil seal comprises a sealing polymer disposed over a metal,
wherein the body is comprises at least one of polypropylene, polyethylene terephthalate, and aluminum in a multilayer structure.
16. The cartridge of claim 15, wherein the body and the seal can each withstand both hot-fill and cold-fill applications.
17. The system of claim 15, wherein the metal includes aluminum, metalized polyester, or metalized polypropylene.
18. The system of claim 17, wherein the metalized polypropylene is bi-oriented.
19. The system of claim 15, wherein the sealing polymer comprises polyethylene.
20. The system of claim 15, wherein the cartridge comprises at least two separate chambers.
21. The system of claim 15, wherein the multi-layer structure includes a passive barrier layer.
22. The system of claim 15, wherein the multi-layer structure includes an oxygen scavenger layer.
23. A beverage dispensing system comprising:
a container;
an attachment mechanism coupled to the container, the attachment mechanism comprising a receptacle, a cutting portion, and a cartridge pressure member, wherein the

cartridge pressure member is hingedly attached to the receptacle and rotatable between an open position and a closed position; and
a dome portion configured to move between a first position and a second position to open a cartridge.
24. The beverage dispensing system of claim 23, wherein the beverage dispensing system further comprises a cartridge adapted to engage the attachment mechanism at the receptacle, the cartridge comprising a first chamber defined by a rigid body, an opening, and a pierceable cover located over the opening, and wherein, in the second position, the dome portion pushes the cover against the cutting portion, thereby opening the first chamber and dispensing its contents into the container.
25. The beverage dispensing system of claim 23, wherein the dome portion is provided on the cartridge pressure member.
26. The beverage dispensing system of claim 23, wherein the dome portion is configured to move between a first position and a second position when the cartridge pressure member is in a closed position.
27. The beverage dispensing system of claim 23, wherein the dome portion comprises silicone.
28. The beverage dispensing system of claim 23, wherein in the first position, the dome portion is spaced apart from the rigid body, and wherein in the second position, the dome portion directly contacts the rigid body.
29. The beverage dispensing system of claim 23, wherein the dome portion moves from the first position to the second position upon an externally applied pressure to the dome portion.
30. The beverage dispensing system of claim 23, wherein the dome portion is flexible.

31. The beverage dispensing system of claim 23, wherein the cartridge comprises a second chamber defined by a rigid body, an opening, and a pierceable cover located over the opening of the second chamber, and the cutting portion comprises a second cutting portion, wherein in the second position, the dome portion engages the rigid body of the second chamber and pushes the opening of the second chamber against the second cutting portion, thereby opening the second chamber and dispensing its contents into the container.
32. The beverage dispensing system of claim 31, wherein the cartridge comprises a flexible flange between the first chamber and the second chamber.