The present invention relates to a process for treating organic waste, which comprises the step of contacting an organic waste with one or more microorganisms from at least three of the following microorganism species: Bacillus sp. microorganisms, Pseudomonas sp. microorganisms, Bifidobacterium sp. microorganisms and Lactobacillus sp. microorganisms, the contacting being undertaken under conditions to at least partly convert the organic waste to organic fertilizer.