Beverage-ingredient cartridge and cap for beverage-ingredient cartridge

A beverage-ingredient cartridge, comprising:

• a container having a closed lower end and an open upper end, wherein the container is configured to store a first beverage ingredient;
• a cap secured within the open upper end of the container, wherein the cap seals the open upper end of the container, the cap comprising:
• a storage compartment comprising a base and a sidewall extending from a perimeter of the base in a direction away from a closed lower end of the container, wherein the storage compartment is configured to store a second beverage ingredient;
• a column extending from the base in a direction away from the closed lower end of the container, wherein the column is spaced from the sidewall;
• a line of weakness defining a separable region of the base, wherein the column extends from the separable region of the base;
• and
• a plastic film secured to a rim at an upper end of the sidewall and to the column,
• wherein the plastic film seals the storage compartment;
• wherein, upon application of a force to the column, the separable region separates from the base and the plastic film tears such that the storage compartment and the container are open to an environment outside of the beverage-ingredient cartridge.