A beverage preparation package including a container defining a multiplicity of openings, and a beverage preparation composition positioned in the container. The beverage preparation composition includes a microwave susceptor and a beverage precursor. In some cases, the beverage preparation composition includes a particulate beverage precursor and a particulate microwave susceptor. The particulate beverage precursor typically includes a plant material, such as coffee beans, tea leaves, herbs, or the like. Preparing a beverage includes contacting water with a beverage preparation package including a beverage preparation composition and water, irradiating the water with microwave radiation to vaporize at least a portion of the water, thereby imparting a flavor from the beverage preparation composition to the water to yield the beverage. The beverage preparation composition can be separated from the beverage.

The present invention concerns a process for producing a container for the preparation of a beverage in a beverage preparation device, comprising the steps of: a. providing a water injection wall (3) of said, b. providing a beverage delivery wall (4) of said container, wherein at least one, preferably both, of said injection and delivery walls (3, 4) has a cup shape, c. placing a beverage ingredient body in said at least one cup shaped wall (4), d. sealing together edge portions (3A, 4A) of said injection and delivery walls (4, 3) in a sealing station, such as to form a chamber (1), wherein said sealing station comprise a housing element having a housing temperature (Th), wherein said body (2) is shaped and dimensioned such as not to completely fill said chamber (1), said process being characterized in that, after the sealing step, the container is cooled to a cooling temperature (Tc) being either: at least 15 C. lower than the temperature of the housing, orcomprised between 10 C. and +25 C.