Marmite supplies are on a knife edge, with lovers of the spread being urged to ration their use as supermarkets run low on stock.
Manufacturing of the popular breakfast spread has been halted by earthquake damage to Sanitarium's Christchurch plant - the only plant where Marmite is made.
Sanitarium is urging consumers not to "freak out" as it works to relocate its Marmite manufacturing facilities to a safer part of the Christchurch site. But it is asking consumers to ration their Marmite use while supplies are spread thin.