A self-heating beverage container includes a housing defining an open interior area for holding a liquid and defining a cavity separated from the open interior area. The container includes a heater portion removably coupled to the housing within the cavity. First and second reactants may be positioned in the cartridge area where they may be selectively combined to produce heat when a seal between them is punctured, causing the liquid to be heated. The container includes a selection portion that is selectively separable from the housing. A plurality of flavoring agents is positioned in the selection portion, each flavoring agent being separated from each other flavoring agent. Each flavoring agent is selectively separated from said open interior area by at least one breakable barrier. Each breakable barrier may be selectively pierced so as to dispense an ingredient into the liquid where it may be selectively mixed and heated.