When cooking and eating a meal it is common to obtain uneaten organic remnants such as a melon rind or meal scraps. Since the consumer no longer sees a need for it it is considered waste and mixed in with the trash. However, there are some who see the potential in this "waste" and are implementing steps to utilize such material. One method is known as bokashi where the waste is fermented with effective microorganisms.
St. Sithians Collage in Johannesburg has decided to use the bokashi technique in an effort to become carbon neutral by 2015.