A system and process for steeping tea in a vessel is disclosed. The present invention incorporates the use of an infusing filter seated on or within a vessel and a lid or retaining mechanism to steep tea in water. The vessel has an retaining ledge that supports a mating infuser placed inside. The infuser seats in a stationery position on the mating ledge inside the vessel, offset from the center of the vessel, to allow for stirring, pouring or drinking of the resulting beverage without introducing the infusible material into the resulting steeped beverage product. The infuser comprises a filter element that holds the infusible material and allows contact with the water. The infusing filter is retained in its seated position in the cup, ether by a lid or positive locking mechanism that allows for the safe and convenient portage of the tea steeping assembly. The tea steeping assembly introduces a system that has the ability to produce a beverage product in a process that is entirely biodegradable and compostable.