You can use Bokashi:
Developed in Japan, the Bokashi Compost Kit quickly and odour-lessly converts your organic waste into a high-grade soil conditioner through the use of effective microbes or Bokashi – a Japanese word meaning “fermented organic matter.” Similar to the process used to make yoghurt, this system relies on fermentation to decompose the matter rather than putrefaction, so no offensive odour is produced. For more info and to check out local suppliers go to: