Organic raw materials are the renewable sources of substrates for our industries and for our microbial communities. As industrial, agricultural or forestry side streams, they are usually affordable raw materials if the process entities, equipment and protocols are properly designed. The microbial communities that are used as biocatalysts take care of the process development together with the process team. Moreover, they constitute or shape the process to resemble the natural bioprocess as it takes place or occurs in nature and thus make it “Industry Like Nature®” – type of endeavor. As an ultimate result, we could make our industries increasingly 100% sustainable with the help of microbes. In case of food or forest industry side streams, this means fossil-free production of valuable chemicals, food and feed components, energy and gases, and soil improvement agents or organic fertilizers. The so-called “Finnoflag biorefinery” idea has been tested in many cases together with domestic and international colleagues and industries. In here, we attempt to share the basic thinking.