Cooking with fuel from human waste

A London design student has produced a new, closed-loop toilet management system that facilitates the recycling of human waste into cooking fuel. Virginia Gardiner has made a prototypical waterless toilet, called the LooWatt, that is part of a closed-loop energy management concept. It also uses no energy and converts human waste into a commodity.
Rather than flushing the organic waste into a sewage system, the toilet user turns a crank that pushes the material into a receptacle lined with a carbon-rich, biodegradable film. The portal into this receptacle is sealed shut once the crank is turned completely and the waste disappears into the tank. Thus, no odour lingers.
The collected waste is periodically removed to an anaerobic digester, which produces cooking gas from the methane.