Containers

A package for preparation of a foamed beverage or food product containing at least a liquid primary ingredient and a secondary ingredient, the package comprising at least one wall defining a chamber at least partially filled with the primary ingredient, an outlet for dispensing a prepared product, and a capsule surrounding the primary ingredient separating the secondary ingredient from the primary ingredient, the capsule being attached to insides of opposing walls of the package with the ability to break when the opposing walls are moved further apart, wherein at least one of the ingredients includes a foaming agent for producing a foamed product when the capsule is broken and the primary and secondary ingredients mix;

• and
• an air inlet device for selectively enabling ingress of air into the chamber,
• wherein the air inlet device comprises a plurality of apertures in the at least one wall of a size which allows the ingress of air into the chamber but substantially prevents egress of liquid from the chamber.